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

Example Input: Problem: joe needs to paint all the airplane hangars at the airport , so he buys 360 gallons of paint to do the job . during the first week , he uses 1 / 4 of all the paint . during the second week , he uses 1 / 4 of the remaining paint . how many gallons of paint has joe used ?
Options: a ) 18 , b ) 157 , c ) 175 , d ) 216 , e ) 250
Example Output: b

Example Input: Problem: if the product of two numbers is 45276 and their h . c . f . is 22 , find their l . c . m .
Options: a ) 2574 , b ) 2500 , c ) 2100 , d ) 2058 , e ) none of these
Example Output: d

Example Input: Problem: if 4 men can reap 40 acres of land in 15 days , how many acres of land can 16 men reap in 30 days ?
Options: a ) 320 , b ) 240 , c ) 369 , d ) 489 , e ) 125
Example Output:
a