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 v varies jointly as w and x and inversely as the fourth root of y.

A) $v = w x \frac { \sqrt [ 4 ] { y } } { k }$
B) $v = \sqrt [ 4 ] { \frac { k w x } { y } }$
C) $v = \frac { k w x } { \sqrt [ 4 ] { y } }$
D) $v = w x _ { \sqrt [ 4 ] { \frac { y } { k } } } ^ { \sqrt { \frac { y } { k } } }$