Refer to the Following Graphs to Determine an Appropriate Response $y = \sqrt { x }$

Multiple Choice

Refer to the following graphs to determine an appropriate response.
-Which one is the graph of $y = \sqrt { x }$ ? What is it's domain?

A) graph B; $[ 0 , \infty )$
B) graph D; $[ 0 , \infty )$
C) graph $C ; \{ - 2 , - 1,0,1,2 \}$
D) graph $A ; ( - \infty , \infty )$