The table of values below represent a function.

Select all of the values of z that will make the relationship a function.

x ​ y ​
​3 ​3
​ 4 ​5
​ 5 ​ 6
​ z ​ 5
​6 ​10


A: 0
B: 2
C: 3
D: 5
E: 6
F: 10