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: find the area of a parallelogram with base 32 cm and height 15 cm .
Options: a ) 200 , b ) 384 , c ) 345 , d ) 480 , e ) 242

Ex Output:
d

Ex Input:
Problem: 30 square stone slabs of equal size were needed to cover a floor area of 50.7 sq . m . find the length of each stone slab ?
Options: a ) 130 cm , b ) 767 cm , c ) 88 cm , d ) 666 cm , e ) 776 cm

Ex Output:
a

Ex Input:
Problem: what positive number , when squared , is equal to the cube of the positive square root of 17 ?
Options: ['a ) 64', 'b ) 32', 'c ) 8', 'd ) 4', 'e ) 2']

Ex Output:
c