问题如下：
Giorna Booa，an investment firm in the United States. Once the recommendation changes have been announced, it always starts trading for its own account immediately. It is likely that this firm violates the Code and Standards?
选项：
A. No, the firm can trade for its own account any time.
B. Yes.
C. No, the firm can trade before its clients.
解释：
B is correct.
According to Standard III(B) Fair Dealing, the company must give its clients enough time to take action based on their recommendations or changes.
题干中没说明这个recommandation是这家投资公司做出的，不可以看到别家公司recommanfation改变就立即交易吗？
