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

Example Input: Problem: find the perimeter and area of a square of side 19 cm . 
Options: a ) 324 , b ) 361 , c ) 400 , d ) 441 , e ) 484
Example Output: b

Example Input: Problem: the supplementary of an angle is thrice its complimentary . find the angle . 
Options: a ) 60 , b ) 45 , c ) 90 , d ) 180 , e ) 120
Example Output: b

Example Input: Problem: find the area of a parallelogram with base 20 cm and height 40 cm ? 
Options: a ) 100 cm 2 , b ) 250 cm 2 , c ) 800 cm 2 , d ) 296 cm 2 , e ) 456 cm 2
Example Output:
c