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 is equal to five times the area of a rectangle of dimensions 20 cm * 16 cm . what is the perimeter of the square ? 
Options: a ) 289 cm , b ) 160 cm , c ) 829 cm , d ) 288 cm , e ) 289 cm

Output: b


Input: Consider Input: Problem: if the length of the side of a square is doubled , what is the ratio of the areas of the original square to the area of the new square ? 
Options: ['a ) 1 : 4', 'b ) 2 : 4', 'c ) 3 : 4', 'd ) 4 : 4', 'e ) 5 : 4']

Output: a


Input: Consider Input: Problem: the least perfect square , which is divisible by each of 21,36 and 66 is 
Options: ['a ) 213444', 'b ) 214344', 'c ) 214434', 'd ) 213443', 'e ) none of these']


Output: a