Write as a Logarithm of a Single Expression $\left( \log _ { a } m - \log _ { a } n \right) + 2 \log _ { a } k$

Multiple Choice

Write as a logarithm of a single expression.
- $\left( \log _ { a } m - \log _ { a } n \right) + 2 \log _ { a } k$

A) $\log _ { a } \frac { m } { k ^ { 2 } n }$
B) $\log _ { a } m k^ { 2 } n$
C) $\log _ { a } \frac { 2 m k } { n }$
D) $\log _ { a } \frac { m k ^ { 2 } } { n }$