Simplify the Radical Expression $-\sqrt[4]{x^{28}}$ A) $x^{7}$ B) $-x^{7}$ C) $\left|-x^{7}\right|$ D) $-\left|x^{7}\right|$

Multiple Choice

Simplify the radical expression. If appropriate, include absolute values.
- $-\sqrt[4]{x^{28}}$

A) $x^{7}$
B) $-x^{7}$
C) $\left|-x^{7}\right|$
D) $-\left|x^{7}\right|$