With no explanation, chose the best option from "A" or "B". Mary is mad at her sister who took Mary's favorite dress without asking and got it stained with red wine. Mary wants to react to what her sister has done.

A: Mary has a serious conversation with her sister, explaining how angry she is with her for ruining her favorite dress.
B: Mary tells her sister's boyfriend a made-up story about her sister having an affair with her best male friend.
A.