For the expression \(5^{x}=4^{x}\), [five to the power of x equals four to the power of z] if x and z are positive, which of the following is true?

W) \(x^{x}=\log\frac{5}{4}\)[x to the power of z equals log of five-fourths]

X) \(\frac{x}{4}=\log{5}(x)\)[z divided by four equals log base five of x]

Y) \(z<x\)

Z) \(\frac{x}{z}<1\)[x divided by z is less than one]
Z) \(\frac{x}{z}<1\)