In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Input: Consider Input: Problem: find the principle on a certain sum of money at 5 % per annum for 3 1 / 5 years if the amount being rs . 580 ? 
Options: a ) rs . 500 , b ) rs . 5100 , c ) rs . 530 , d ) rs . 540 , e ) none of these

Output: a


Input: Consider Input: Problem: i chose a number and divide it by 8 . then i subtracted 100 from the result and got 6 . what was the number i chose ? 
Options: a ) 600 , b ) 700 , c ) 800 , d ) 900 , e ) 848

Output: e


Input: Consider Input: Problem: in a division sum , the remainder is 0 . as student mistook the divisor by 12 instead of 21 and obtained 56 as quotient . what is the correct quotient ? 
Options: a ) 0 , b ) 12 , c ) 32 , d ) 20 , e ) 25


Output: c