Correct option is D
Given - Each of P, Q, R, S, T, U and V has an exam on a different day of a week starting from Monday and ending on Sunday of the same week. P has an exam on Friday. Only 2 people have an exam between P and S. U has an exam immediately before V, and Q has an exam immediately after T. Only 2 people have an exam between R and V.

Only 2 people have an exam between R and V. - meaning only Case I is follows.
Three people (R, S, U) have an exam before V.
Option D is correct.