Find the Root $\sqrt [ 4 ] { ( 5 x z ) ^ { 4 } }$

Multiple Choice

Find the root. Use absolute value bars when necessary.
- $\sqrt [ 4 ] { ( 5 x z ) ^ { 4 } }$

A) not a real number
B) $5 | x z |$
C) $5 x z$
D) $25 | \mathrm { xz } |$