问题如下：
Which market manipulation strategy is most likely the target of the new rule suggested by Martin?
选项：
A.Rumormongering
Gunning the market
Trading for market impact
解释：
A is correct. Rumormongering is the dissemination of false information about fundamental values or about other traders’ trading intentions in an attempt to alter investors’ value assessments. Martin’s suggested news validation rule would reduce the likelihood that SAMN would be adversely affected by this market manipulation strategy.
news be validated before a trade triggered by news is executed.
这句是什么意思？
这个知识点是在哪里讲到的？
麻烦解释一下这道题目，谢谢。
