Consider the graph below.

Note: you can click on the graph to enlarge it.

Does the graph represent $y$ as a function of $x$?

A. Yes, this represents a function
B. No, this does not represent a function

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If the graph represents $y$ as a function of $x$, state the domain and choose the correct range of the function. If the graph does not represent $y$ as a function of $x$, leave the answer blanks for $x$ and choose option (E) from the multiple choice.

The domain is:

Note: Write your answer in interval notation. If the answer includes more than one interval write the intervals separated by the union symbol, U. If the answer is $-\infty$, input -infinity ; if the answer is $\infty$, input infinity .

The range is:

A. $[-1,2) \cup \{6\}$
B. $[-1,4] \cup \{6\}$
C. $[-1,4]$
D. $[-1,6]$
E. Not a function