Six girls, P, Q, R, S, T and U are sitting in two lines, one line behind the other line. All the girls are facing north. In the front line there are three girls. The remaining girls are sitting in the second line. T is just behind P. R is sitting to the immediate left of U. S is between T and Q. S is sitting to the immediate left of Q. Who is sitting just behind R?

A

P

B

Q

C

S

D

Cannot be determined