If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 52, what is the compound interest on the same sum at the rate and for the same time?	Choose the most appropriate option.
A) s . 53.30
B) s . 53.22
C) s . 51.219
D) s . 53.18
E) s . 51.10

Rationale: explanation : sum = ( 52 * 100 ) / ( 2 * 5 ) = rs . 520 amount = [ 520 * ( 1 + 5 / 100 ) 2 ] = rs . 573.3 c . i . = ( 573.3 - 520 ) = rs . 53.30 . answer : a
Answer: A