问题如下图：
选项：
A. 
B. 
C. 
解释：
请问老师，C难道没有违规吗？
En placea buy orr whiis 5 times the average weekly volume through a frienfor his personaccount. En hirea new chief financiofficer for his firm aninstructehim to reaffirm the firm’s announceearnings in previous financistatements. B is correct. Baseon StanrII(Market Manipulation, a purchase orr whiis remarkably greater thaverage volume through personaccount shoulregarattempt to manipulate the market. The ultimate gois to increase the share prianattrapotentibuyers, B is correct. Releasing the news of a possible merger aninstructing the new officer to reaffirm previous earnings are common actions whichelp the investors to make their investment cisions, A anC are incorrect.A为什么对？M&A一般都是重大保密信息，如果他把这个消息发到网上公开找并购伙伴，别人就会知道公司要并购，并提前买入相关公司股票以套利，A为什么对
B为什么对？
