Raise to the Power or Find the Root $- \sqrt [ 5 ] { x ^ { 15 } }$

Multiple Choice

Raise to the power or find the root. Assume that all variables represent positive real numbers. Write with only positive
exponents.
- $- \sqrt [ 5 ] { x ^ { 15 } }$

A) $- x ^ { 3 }$
B) $- x ^ { 5 }$
C) $- 3 x$
D) $- x ^ { 4 }$