aNYBODY FAMILAR WITH PHOTOSHOP CS3?…CLONE STAMP QUESTION!?

i have this question in online photoshp quiz , not sure exactlly which one is the right answer thogh

This tool works like the Clone Stamp tool except it paints pixels from a designated snapshot.

A. Healing Brush
B. Clone Stamp
C. History Brush
D. Patch Tool

My guess is between B and c what do you thinkl?