Simplify the Expression $$- \sqrt { x ^ { 2 } - 16 x + 64 }$$

Multiple Choice

Simplify the expression.
- $$- \sqrt { x ^ { 2 } - 16 x + 64 }$$

A) $- | x - 8 |$
B) $- x + 8$
C) $| x - 8 |$
D) $- x - 8$