Solve the Logarithmic Equation $$\log _ { 9 } k + \log _ { 9 } ( 2 k + 9 ) = 2$$

Multiple Choice

Solve the logarithmic equation. $$\log _ { 9 } k + \log _ { 9 } ( 2 k + 9 ) = 2$$

A) $\left\{ \frac { 9 } { 2 } \right\}$
B) { }
C) $\left\{ - 9 , \frac { 9 } { 2 } \right\}$
D) $\{ - 9 \}$