Express as a Single Logarithm $3 \log _ { b } q - \log _ { b } r$

Multiple Choice

Express as a single logarithm.
- $3 \log _ { b } q - \log _ { b } r$

A) $\log _ { \mathrm { b } } \left( \mathrm { q } ^ { 3 } - \mathrm { r } \right)$
B) $\log _ { b } \frac { 3 q } { r }$
C) $\log _ { b } \frac { q ^ { 3 } } { r }$
D) $\log _ { b } \mathrm { q } ^ { 3 } \div \log _ { \mathrm { b } } \mathrm { r }$