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 area of a triangle is with base 10 m and height 5 m ? 
Options: a ) 11 , b ) 25 , c ) 787 , d ) 122 , e ) 12

Ex Output:
b


Ex Input:
Problem: if the area of a circle is 16 pi square feet , find its circumference . 
Options: a ) 8 pi feet , b ) 28 pi feet , c ) 38 pi feet , d ) 48 pi feet , e ) 58 pi feet

Ex Output:
a


Ex Input:
Problem: find the area of a parallelogram with base 32 cm and height 22 cm ? 
Options: a ) 281 , b ) 284 , c ) 704 , d ) 640 , e ) 920

Ex Output:

c