With no explanation, chose the best option from "A" or "B". Caleb is in the break room at work making coffee when a new employee walks in and asks Caleb for advice. Caleb wants to get back to his office.

A: Caleb tells the new employee to send him an email about it, and he'll respond soon.
B: Caleb tells the new employee that he can't talk right now because he has to get back to working.
A.