问一道题

Q. Which is an example of an activity that may be legal but that CFA Institute considers unethical?

1. Making legally required disclosures in marketing materials
2. Trading while in possession of material nonpublic information
3. Disclosure by an employee of his or her own company’s dishonest activity

为什么用重大非公开信息交易是合法的？要疯了，这些在CFA官网上的道德题...

老师请问这道题怎么选择呢？答案没看懂，谢谢。Ethics的这些跟code无关的题怎么这么难，请老师指导。下次遇到该怎么办？

谢谢老师！