Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Write a variation model using k as the constant of variation.
-The variable n is directly proportional to the fifth power of $\alpha$ and inversely proportional to the fifth power of z.

A) $n = \frac { z ^ { 5 } } { k \alpha ^ { 5 } }$
B) $n = \frac { k \alpha ^ { 5 } } { z ^ { 5 } }$
C) $n = \frac { k z ^ { 5 } } { \alpha ^ { 5 } }$
D) $n = \frac { z ^ { 5 } } { k } \alpha ^ { 5 }$