问题如下：
Which market manipulation strategy is most likely the target of the new rule suggested by Martin?
选项：
A. Rumormongering
B. Gunning the market
C. 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.
