If x y are positive real numbers and x^(3/4) = y^(1/4) what relation is true?

If x y are positive real numbers and x^(3/4) = y^(1/4) what relation is true?
A: x = y^3
B: x^3 = y
C: x = y^M
D: None of these

Given x^(3/4) = y^(1/4). Raise both sides to the power of 4