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

Input: Consider Input: Problem: the area of a square field is 1600 km 2 . how long will it take for a horse to run around at the speed of 16 km / h ? 
Options: a ) 12 h , b ) 10 h , c ) 8 h , d ) 6 h , e ) none of these

Output: b


Input: Consider 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

Output: d


Input: Consider Input: Problem: the monthly rent of a shop of dimension 20 feet × 18 feet is rs . 1440 . what is the annual rent per square foot of the shop ? 
Options: ['a ) 48', 'b ) 56', 'c ) 68', 'd ) 87', 'e ) 92']


Output: a