Express the Verbal Model " M Varies Inversely with the Cube

Multiple Choice

Express the verbal model " M varies inversely with the cube of n and directly with the square of x " into symbols.

A) M = $\frac { K x ^ { 2 } } { n ^ { 3 } }$
B) M = $\frac { K n ^ { 3 } } { x ^ { 2 } }$
C) $M = k x ^ { 2 } n ^ { 3 }$
D) M = $\frac { K \sqrt { x } } { \sqrt [ 3 ] { n } }$