The graph represents a relation where x represents the independent variable and y represents the dependent variable. a graph with points plotted at negative 5 comma 1, at negative 2 comma 0, at negative 1 comma 3, at negative 1 comma negative 2, at 0 comma 2, and at 5 comma 1 Is the relation a function? Explain.

A: No, because for each input there is not exactly one output.

B: No, because for each output there is not exactly one input.

C: Yes, because for each input there is exactly one output.

D: Yes, because for each output there is exactly one input.