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

Ex Input:
Problem: what will be the cost of building a fence around a square plot with area equal to 81 sq ft , if the price per foot of building the fence is rs . 58 ? 
Options: a ) 3944 , b ) 2287 , c ) 2977 , d ) 2088 , e ) 1298

Ex Output:
d


Ex Input:
Problem: if radius of a circle is reduced by 10 % , then how much % of its area will be reduced ? 
Options: ['a ) 10 %', 'b ) 19 %', 'c ) 20 %', 'd ) 36 %', 'e ) 30 %']

Ex Output:
b


Ex Input:
Problem: if the area of a circle decreases by 66 % , then the radius of a circle decreases by 
Options: a ) 20 % , b ) 18 % , c ) 36 % , d ) 64 % , e ) none of these

Ex Output:

e