With no explanation, chose the best option from "A" or "B". Alex has been watching Theresa work, every day, as a colleague, and he notices things that she is doing wrong. Alex wants to advise Theresa on how to improve her work performance.

A: Alex mentions to Theresa that he found a better way to work, and he shows her what he's been doing.
B: Alex lists all of the things that he has noticed that Theresa is doing wrong, and he tells her she needs to do a better job.
A.