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: the second angle of a triangle is double the first ( 110 ) . the third angle is 40 less than the first ( 15 ) . find the first angle . 
Options: a ) 35 , b ) 45 , c ) 55 , d ) 65 , e ) 75

Ex Output:
c


Ex Input:
Problem: what will be the cost of building a fence around a square plot with area equal to 289 sq ft , if the price per foot of building the fence is rs . 56 ? 
Options: a ) s . 3944 , b ) s . 3948 , c ) s . 3942 , d ) s . 3808 , e ) s . 3929

Ex Output:
d


Ex Input:
Problem: in a rectangular axis system , what is the area of a parallelogram with the coordinates : ( 2,2 ) , ( 8,2 ) , ( 3,5 ) , ( 9,5 ) ? 
Options: a ) 18 . , b ) 28 . , c ) 35 . , d ) 49 . , e ) 52 .

Ex Output:

a