Directions: Study the following information carefully and answer the questions given below:

A certain number of contestants participated in a marathon. Before starting the marathon, they were made to stand in a row facing north direction. Three persons were standing between C and F, who was not standing next to B. Q was standing exactly between N and C. One person was standing between M and R, who was standing fourth to the right of A. Five persons were standing between O and B. C was standing third to the left of B. M was standing exactly between Q and F. Two persons were standing between O and N, who was standing fifth from the right end. The number of persons standing to the right of O was the same as the number of persons standing to the left of C.