Write the Logarithmic Expression as a Single Logarithm with Coefficient $$\log _ { 9 } 20,412 - \log _ { 9 } 7 - \log _ { 9 } 4$$

Multiple Choice

Write the logarithmic expression as a single logarithm with coefficient 1, and simplify as much as
possible.
- $$\log _ { 9 } 20,412 - \log _ { 9 } 7 - \log _ { 9 } 4$$

A) $\log _ { 9 } 571,536$
B) 20,401
C) 3
D) $\log _ { 9 } 20,423$