First Principles Thinking: market gossip is not the same as public dissemination
B is correct. Standard II(A) requires actual public dissemination, not a vague claim that 'everyone knows.' Without public release, the information remains nonpublic.
A is tempting because widespread whispers can feel equivalent to public knowledge, but the standard does not treat them that way.
C fails because the prohibition applies to recommendations and client trades too, not just personal trading.