Simplify the Given Expression $\left( \frac { 1 } { 3 } \right) ^ { 2 }$

Multiple Choice

Simplify the given expression.
- $\left( \frac { 1 } { 3 } \right) ^ { 2 }$

A) $\frac { 1 } { 9 }$

B) $\frac { 1 } { 8 }$

C) $\frac { 2 } { 3 }$

D) $\frac { 1 } { 6 }$