With no explanation, chose the best option from "A" or "B". John sees his friend Bill kissing another woman that is clearly not Bill's wife, Susan. John wants to tell someone what he just saw.

A: John calls Susan and tells her that he just saw her husband being a little too friendly with another woman.
B: John calls his own wife and tells her that an anonymous friend is having an affair and tells her he wants it off his chest.
B.