Two persons A and B start simultaneously from two places c km apart, and walk in the same direction. If A travels at the rate of p km/hr and travels at the rate of q km/hr, then A has travelled before he overtakes B a distance of

Options

A. `(qc)/(p+q)km`
B. `(pc)/(p-q)km`
C. `(qc)/(p-q)km`
D. `(pc)/(p+q)km`