Express as a Single Logarithm $\log _ { c } m + \log _ { c } n$

Multiple Choice

Express as a single logarithm.
- $\log _ { c } m + \log _ { c } n$

A) $\log _ { \mathrm { C } } \mathrm { mn }$
B) $\log _ { \mathrm { C } } ( \mathrm { mn } )$
C) $\log _ { \mathrm { C } } \mathrm { m } \cdot \log _ { \mathrm { C } } \mathrm { n }$
D) $\log _ { \mathrm { C } } \frac { \mathrm { m } } { \mathrm { n } }$