Find the Indicated Function and Write Its Domain in Interval $$m ( x ) = \sqrt { x + 2 } , n ( x ) = x - 3 , ( m \circ n ) ( x ) = \text { ? }$$

Multiple Choice

Find the indicated function and write its domain in interval notation.
- $$m ( x ) = \sqrt { x + 2 } , n ( x ) = x - 3 , ( m \circ n ) ( x ) = \text { ? }$$

A) $( m \circ n ) ( x ) = ( x - 3 ) \sqrt { x + 2 }$ ; domain: $[ - 2 , \infty )$
B) $( m \circ n ) ( x ) = \sqrt { x + 2 } - 3$ ; domain: $[ - 2 , \infty )$
C) $( m \circ n ) ( x ) = \sqrt { x ^ { 2 } - 6 }$ ; domain: $[ - 6 , \infty )$
D) $( m \circ n ) ( x ) = \sqrt { x - 1 }$ ; domain: $[ 1 , \infty )$