With no explanation, chose the best option from "A" or "B". Wendel and Nancy are plumbers who like to prank each other, and Nancy is working on a pipe with a blowtorch. Wendel wants to scare Nancy with a prank.

A: Wendel decides to prank Nancy while she is soldering the pipe.
B: Wendel waits until Nancy is done with the blowtorch to prank Nancy.
B.