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

Q: Problem: if the volume of a cube is x ^ 3 cubic units , what is the number of square units in the surface area of the cube ? 
Options: ['a ) x ^ 2', 'b ) x ^ 3', 'c ) x ^ 6', 'd ) 6 x ^ 2', 'e ) 6 x ^ 3']

A: d
****
Q: 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

A: c
****
Q: Problem: the volume of a cube is 343 cc . find its surface . 
Options: a ) 864 , b ) 556 , c ) 294 , d ) 287 , e ) 267

A:
c
****