The compound interest earned by Sunil on a certain amount at the end of two years at the rate of 5% p.a. was Rs.492. Find the total amount that Sunil got back at the end of two years in the form of principal plus interest earned.	Pick
A) rs . 4935  B) rs . 4925  C) rs . 5390  D) rs . 5290  E) rs . 5292

Rationale: "let the sum be rs . p p { [ 1 + 5 / 100 ] 2 - 1 } = 492 p ( 5 / 100 ) ( 2 + 5 / 100 ) = 492 [ a 2 - b 2 = ( a - b ) ( a + b ) ] p = 492 / ( 0.05 ) ( 2.05 ) = 4800 . amount = 4800 + 492 = rs . 5292 answer : e"
Answer: E