With no explanation, chose the best option from "A" or "B". Peter is at home when he gets a phone call from her mother asking him to come over and help her move a couch. Peter wants to respond to his mother's request.

A: Peter tells his mother that he can and says that he'll be over at her place shortly.
B: Peter tells his mother that he just can't today because he's not feeling so great, and he can't lift heavy objects.
A.