Stroking a Participants' Leg Led to Increased Activation in S2

Stroking a participants' leg led to increased activation in S2. Interestingly, S2 activity also increased

A) when participants saw a video of the same leg moving around in isolation.
B) when participants saw a video depicting someone stroking an office supply binder.
C) when participants saw a video of an object moving toward someone's leg.
D) when participants thought about lifting the same leg and moving it around.