Six letters S, T, M, P, R and C are written on different faces of a dice. Two positions of this dice are shown in the figures below. Find the letter on the face opposite to M.

Correct option is A

Given 

the common alphabet in both is T
moving clockwise direction starting from T
first figure - T -M-S
second figure - T - R-P
the opposite face of M and R each other and S and P each other.
so the correct answer is R , option a