You Are on the Subway in New York When You

You are on the subway in New York when you overhear two people you do not know talking about an upcoming merger, news not yet public. They seem to know their stuff. If you buy stock based on this information, and profit when the information turns out true, you have:

A) profited, but are an outsider and so your actions are probably not illegal
B) engaged in insider trading that is probably illegal
C) not engaged in insider trading because you are not a corporate officer
D) not engaged in insider trading because once you overheard the information it was public
E) violated the Insider Trading Sanctions Act and could face criminal charges