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: which is the smallest no which divides 2880 and gives a perfect square ? 
Options: ['a ) 4', 'b ) 9', 'c ) 3', 'd ) 5', 'e ) 7']

Output: d


Input: Consider Input: Problem: a football field is 7200 square yards . if 1200 pounds of fertilizer are spread evenly across the entire field , how many pounds of fertilizer were spread over an area of the field totaling 3600 square yards ? 
Options: a ) 450 , b ) 600 , c ) 750 , d ) 2400 , e ) 3200

Output: b


Input: Consider Input: Problem: if the length of the longest chord of a certain circle is 14 , what is the radius of that certain circle ? 
Options: a ) 2.5 , b ) 5 , c ) 10 , d ) 7 , e ) 9


Output: d