Which of the tables represents a function? (1 point)

table p
input output
6 3
1 2
6 7
table q
input output
5 1
7 8
5 6
table r
input output
2 5
6 7
9 8
table s
input output
3 6
4 7
4 5

table p

table q

table r

table s

tell me if this is too complicated