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: danny is sitting on a rectangular box . the area of the front face of the box is half the area of the top face , and the area of the top face is 1.5 times the area of the side face . if the volume of the box is 192 , what is the area of the side face of the box ? 
Options: a ) 13 , b ) 16 , c ) 18 , d ) 29 , e ) 32
Example Output: e

Example Input: Problem: a certain cube floating in a bucket of water has between 80 and 90 percent of its volume below the surface of the water . if between 6 and 13 cubic centimeters of the cube ' s volume is above the surface of the water , then the length of a side of the cube is approximately 
Options: a ) 4 , b ) 5 , c ) 7 , d ) 8 , e ) 9
Example Output: a

Example Input: Problem: the diameter of a cylindrical tin is 6 cm and height is 5 cm . find the volume of the cylinder ? 
Options: ['a ) 33', 'b ) 45', 'c ) 66', 'd ) 77', 'e ) 21']
Example Output:
b