Stock Option Agreement优先认股权协议-

1. Grant of Option

AAA hereby grants to BBB an irrevocable option (the Option ) to acquire up to 1,726,398 shares (the Option Shares ) of the Common Stock, par value $,_________ per share, of AAA ( AAA Shares ) in the manner set forth below (i) by exchanging therefor shares of the Common Stock, par value $,_________ per share, of BBB ( BBB Shares ) at a rate of two (2) BBB Shares for each Option Share (the Exercise Ratio ) and/or, at BBB’s election, (ii) by paying cash a t a price determined in accordance with Section 4 below. Capitalized terms used in this Agreement but not defined herein shall have the meanings ascribed thereto in the Merger Agreement.

2. Exercise of Option

The Option may only be exercised by BBB, in whole or in part, at any time or from time to time, upon the occurrence of (i) the commencement of a tender or exchange offer for 25% or more of any class of AAA’s capital stock, or (ii) any of the events specified in Section 7.03 (c) of the Merger Agreement, other than events described in Section 7.01(g) thereof (any of the events specified in

clauses (i) or (ii) of this sentence being referred to herein as an Exercise Event ). In the event BBB wishes to exercise the Option, BBB shall deliver to AAA a written notice (an Exercise Notice ) specifying the total number of Option shares it wishes to acquire and the form of consideration to be paid. Each closing of a purchase of Option Shares (a Closing ) shall occur on a date and at a time designated by BBB in an Exercise Notice delivered at BBB five business days prior to the date of such Closing, which Closing shall be held at the offices of counsel to AAA. The Option shall terminate upon the earlier of (i) the Effective Time, (ii) 180 days following the termination of the Merger Agreement pursuant to Article VII thereof, if an Exercise Event shall have occurred on or prior to the date of such termination, and (iii) the date on which the Merger Agreement is terminated pursuant to Article VII thereof if an Exercise Event shall not have occurred on or prior to such date; provided, however, with respect to the preceding clause (ii) of this sentence, that if the Option cannot be exercised by reason of any applicable government order, then the Option shall not terminate until the tenth business day after such impediment to exercise shall have been removed or shall have become final and not subject to appeal. Notwithstanding the foregoing, the Option may not be exercised if BBB is in breach in any material respect of any of its covenants or agreements contained in the Merger Agreement.

3. Conditions to Closing