Simplify the Rational Expression $$\frac { y ^ { 3 } - 343 } { y - 7 }$$

Multiple Choice

Simplify the rational expression. If the rational expression cannot be simplified, so state.
- $$\frac { y ^ { 3 } - 343 } { y - 7 }$$

A) cannot be simplified
B) $y ^ { 2 } - 49$
C) $y ^ { 2 } + 7 y + 49$
D) $\frac { 1 } { y - 7 }$