请问选项A哪里说的不对呢？不应该卖股票？

问题如下：

Diana Fairbanks, CFA, is married to an auditor who is employed at a large accounting firm. When her husband mentions that a computer firm he audits will receive a qualified opinion, she thinks nothing of it. Later that week, when she reviews a new client account, she notices there are substantial holdings of this computer firm. When she does a thorough internet search for news on the company, she does not find anything about its most recent audit or any other adverse information. Which of the following actions concerning the computer stock should Fairbanks most likely take to avoid violating the CFA Institute Standards of Professional Conduct?

选项：

A.Complete a thorough and diligent analysis of the company and then sell the stock. B.Sell the stock immediately because she has a reasonable basis for taking this investment action. C.Take no investment action.

解释：

The information concerning the qualified opinion is material. It is also nonpublic because it has not been released and is not available online, so the mosaic theory would not hold up in this case. As a result, she would be in violation of Standard II(A)–Material Nonpublic Information if she took investment action based on this information. She should also make reasonable efforts to achieve public dissemination of the information.