If \(a^x=b^y=c^z \quad \text{and} \quad b^2=ac\) then \(y\) equals? a) \(\frac{2xz}{(x+z)}\) b) \(\frac{xz}{2(x-z)}\) c) \(\frac{xz}{2(z-x)}\) d) \(\frac{2xz}{(x-z)}\)

If \(a^x=b^y=c^z \quad \text{and} \quad b^2=ac\) then \(y\) equals?

a) \(\frac{2xz}{(x+z)}\) b) \(\frac{xz}{2(x-z)}\) c) \(\frac{xz}{2(z-x)}\) d) \(\frac{2xz}{(x-z)}\)