If difference between compound interest and simple interest on a sum at 10% P.a. for 2 years is Rs.61 then sum is	Choose the correct choice from the following answers.
A) s . 6100  B) s . 5100  C) s . 5800  D) s . 6000  E) s . 6200

Rationale: "p ( r / 100 ) ^ 2 = c . i - s . i p ( 10 / 100 ) ^ 2 = 61 6100 answer : a"
Answer: A