Solve the Equation $$3 ^ { - x } = \frac { 1 } { 9 }$$

Multiple Choice

Solve the equation.
- $$3 ^ { - x } = \frac { 1 } { 9 }$$

A) $- 2$
B) $\frac { 1 } { 3 }$
C) $\frac { 1 } { 2 }$
D) 2