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'.

Example Input: Problem: how many numbers from 19 to 79 are exactly divisible by 11 ? 
Options: a ) 5 , b ) 6 , c ) 9 , d ) 11 , e ) 12
Example Output: b

Example Input: Problem: a straight line in the xy - plane has y - intercept of 49 . on this line the x - coordinate of the point is 71 and y - coordinate is 12 then what is the slope of the line ? 
Options: a ) 0.5 , b ) 0.51 , c ) - 0.52 , d ) 0.31 , e ) - 0.49
Example Output: c

Example Input: Problem: in a division sum , the quotient is 20 , the divisor 66 and the remainder 55 , find the dividend ? 
Options: a ) 1375 , b ) 1376 , c ) 1875 , d ) 1365 , e ) 1345
Example Output:
a