Find the Domain and Range of the Function $g ( z ) = 2 - \sqrt { z }$

Multiple Choice

Find the domain and range of the function.
- $g ( z ) = 2 - \sqrt { z }$

A) D: $( - \infty , 0 ] , R : [ 2 , \infty )$
B) D: $( - \infty , \infty )$ , R: $( - \infty , 2 ]$
C) D: $( - \infty , 2 ]$ , R: $( - \infty , \infty )$
D) D: $[ 0 , \infty ) , R : ( - \infty , 2 ]$