Determine whether the following relation is a function. left-brace left parenthesis 3 comma 7 right-parenthesis comma left-parenthesis 3 comma 8 right-parenthesis comma left-parenthesis 3 comma negative 2 right-parenthesis comma left-parenthesis 3 comma 4 right-parenthesis comma left-parenthesis 3 comma 1 right-parenthesis right-brace
A. It is a function because the ordered pairs all have the same x-value.
B. It is not a function because there are multiple y-values paired with a single x-value.
C. It is a function because none of the ordered pairs have the same y-value.
D. It is not a function because none of the ordered pairs have the same y-value.