Two satellites P and Q are moving in different circular orbits around the Earth (radius R). The heights of P and Q from the Earth surface are hP and hQ, respectively, where hP=R/3. The accelerations of P and Q due to Earth's gravity are gP and gQ, respectively. If gP/gQ=36/25, what is the value of hQ?
(A) 3R/5
(B) R/6
(C) 6R/5
(D) 5R/6