Question

Which set of ordered pairs is a function"
O {(1,6), (-2,5), (10,1), (-2,7)}
O {(5,5), (1,5), (15,5), (0,5)}
{(0.1), (012), (0,3), (0,4)}
O {(3,2), (-2,2), (3,3), (11,4)}