Find $f \circ g \circ h$ , Where $f ( x ) = \sqrt { 1 - x }$

Multiple Choice

Find $f \circ g \circ h$
, where $f ( x ) = \sqrt { 1 - x }$
, $g ( x ) = 1 - x ^ { 2 }$
, $h ( x ) = 1 + \sqrt { x }$

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