Multiply or Divide as Indicated $\frac { x ^ { 2 } - 16 } { 4 y } \div \frac { 4 - x } { 8 x y }$

Multiple Choice

Multiply or divide as indicated.
- $\frac { x ^ { 2 } - 16 } { 4 y } \div \frac { 4 - x } { 8 x y }$

A) $- 2 x ( x - 4 )$
B) $2 x ( x + 4 )$
C) $2 x ( x - 4 )$
D) $- 2 x ( x + 4 )$