Write the Given Expression as Algebraic Expression $\cos ( \arccos x - \arcsin x )$

Multiple Choice

Write the given expression as algebraic expression.
$\cos ( \arccos x - \arcsin x )$

A) 1
B) $\frac { x \sqrt { 1 - x ^ { 2 } } - x } { \sqrt { x ^ { 2 } + 1 } }$
C) 0
D) $2 x \sqrt { 1 - x ^ { 2 } }$
E) $\frac { x \sqrt { 1 - x ^ { 2 } } + x } { \sqrt { x ^ { 2 } + 1 } }$