Select the correct answer.
Which of the following sets of ordered pairs represents a function?
o
o
o
{(3,5), (-17,-5), (3,-5), (-17,5)}
{(-6,-1), (13,8), (1,6), (1,-10)}
{(10,5), (10,-5), (5,10), (5.-10)}
{(10,5), (-10,-5), (5,10), (-5,-10)}
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