The correct option is
A True
Given series is 15,30,60,120,240
Ratio between first two terms
= 3015 =2Ratio between second and third terms
= 6030 =2Ratio between third and fourth terms
= 12060 =2Ratio between fourth and fifth terms
= 240120 =2Since, the ratio between the terms is the same. The series forms a G.P.