Which relation is also a function?
O A. {(7, 14), (14,7), (7, 21), (35, 28),
(21, 28)
B. {(14,7), (7, 14), (21,14), (28,35),
(28, 21)
1
2
6
C.
3
7
4
8
D. x 14 7
21 28 35
y 7
147
35 21