Simplify the Expression $\sqrt { ( z - 6 ) ^ { 2 } }$

Multiple Choice

Simplify the expression.
- $\sqrt { ( z - 6 ) ^ { 2 } }$

A) $| z - 6 |$
B) $z - 6$
C) $| z | - 6$
D) $6 - \mathrm { z }$