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

Example Input: Problem: if the length of the sides of two cubes are in the ratio 2 : 1 , what is the ratio of their total surface area ? 
Options: a ) 2 : 1 , b ) 3 : 1 , c ) 4 : 1 , d ) 6 : 1 , e ) 8 : 1
Example Output: c

Example Input: Problem: if each edge of a cube is doubled , then its volume : 
Options: ['a ) becomes 8 times', 'b ) becomes 9 times', 'c ) is double', 'd ) becomes 6 times', 'e ) none']
Example Output: a

Example Input: Problem: the length of a rectangle is 5 more than the width . what are the dimensions of the rectangle if the perimeter is 34 ? 
Options: ['a ) 11', 'b ) 12', 'c ) 13', 'd ) 14', 'e ) none']
Example Output:
a