Write as a Logarithm of a Single Expression $$4 \log _ { b } m - \log _ { b } n$$

Multiple Choice

Write as a logarithm of a single expression.
- $$4 \log _ { b } m - \log _ { b } n$$

A) $\log _ { b } \left( m ^ { 4 } - n \right)$
B) $\log _ { b } \frac { 4 m } { n }$
C) $\log _ { b } m ^ { 4 } \div \log _ { b } n$
D) $\log _ { b } \frac { m ^ { 4 } } { n }$