Rewrite the Given Expression as a Single Logarithm $\log _{\mathrm{b}} \mathrm{x}-\log _{\mathrm{b}} \mathrm{z}$

Multiple Choice

Rewrite the given expression as a single logarithm. Assume that all variables are defined in such a way that variable expressions are positive and bases are positive numbers not equal to 1 .
- $\log _{\mathrm{b}} \mathrm{x}-\log _{\mathrm{b}} \mathrm{z}$

A) $\log _{b} \frac{z}{x}$

B) $\log _{2 b} \frac{x}{z}$

C) $\log _{b} \frac{x}{z}$

D) $\log _{b} x-z$