By selling an article at Rs.120, a profit of 25% is made. Find its cost price?	Select the correct option:
A) s . 96 B) s . 45 C) s . 120 D) s . 180 E) s . 189

Rationale: "sp = 120 cp = ( sp ) * [ 100 / ( 100 + p ) ] = 120 * [ 100 / ( 100 + 25 ) ] = 120 * [ 100 / 125 ] = rs . 96 answer : a"
Answer: A