Correct option is C
Given: Six friends A, B, C, D, E, and F are sitting in a row.
C is sitting to the immediate right of A.
D and E is not at any end.
B is sitting between D and E, who sit right of the D.
F is sitting at the left end.
From the given information seating arrangement will be.

D is sitting to the immediate left of B.
Thus, correct option is (c).