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: if a rectangular billboard has an area of 104 square feet and a perimeter of 42 feet , what is the length of each of the longer sides ? 
Options: a ) 4 , b ) 7 , c ) 8 , d ) 13 , e ) 26

Output: d


Input: Consider Input: Problem: find the smallest number that must be added to 1780 to make it a perfect square . 
Options: a ) 17 , b ) 42 , c ) 69 , d ) 47 , e ) 52

Output: c


Input: Consider Input: Problem: the monthly rent of a shop of dimension 20 feet × 15 feet is rs . 3600 . what is the annual rent per square foot of the shop ? 
Options: a ) 43 , b ) 144 , c ) 68 , d ) 87 , e ) 92


Output: b