Find a Mathematical Model for the Verbal Statement $Q = k h ^ { 3 } \sqrt { m }$

Multiple Choice

Find a mathematical model for the verbal statement:
"Q is jointly proportional to the cube of h and the square root of m."

A) $Q = k h ^ { 3 } \sqrt { m }$
B) $Q = k \sqrt { h ^ { 3 } m }$
C) $Q = k h ^ { 2 } \sqrt [ 3 ] { m }$
D) $Q = k \sqrt [ 3 ] { h m ^ { 2 } }$
E) $Q = k \sqrt [ 3 ] { h m }$