Which graph represents a function?
A. A coordinate plane shows 5 points with the following coordinates: (negative 4, 4), (negative 2, 1), ( 0, 1), (2, 1), and (2, negative 4).
B. A coordinate plane shows 5 points with the following coordinates: (negative 2, 2), (negative 2, negative 2), ( 3, negative 4), (3, 0), and (3, 4).
C. A coordinate plane shows 5 points with the following coordinates: (negative 3, 2), (negative 1, 1), (0, negative 1), (1, negative 3), and (1, 3).
D. A coordinate plane shows 5 points with the following coordinates: (negative 4, 3), (negative 2, negative 2), ( 1, 3), (3, negative 2), and (5, 3).