Question

Which of the following is a function, Please i need this its due in 15 min

A= {(1, 4) (2, 5) (3, 6) (4, 7)}
B={(-3, 4) (-1, 6) (2, 4) (5, 5)}
C={(-1, 2) (3, 5) (-1, 4) (7, 12)}
D={(1, 5) (4, 5) (5, 5) (8, 5)}

Answer 1

The correct answer is A

Answer 2

A.

Explanation:

its A because I did this test