What set would no longer be a A function if the ordered pair (5,3) was added

A (-3,5), (-1,-4), (-2,0)

B (1,1), (2,2), (3,3)

C (0,5), (1,3), (2,4)

D (3,0), (4,1), (5,2)

You can answer it by letter

I think it's A because everything else has even numbers and letter A has negative numbers ...

The answer is D because a function means for every input you get exactly one output so

for every x you get one y

in D there is a coordinate (5,2) meaning that if you put in 5 for x you get 2 for y

but the new ordered pair also has 5 for x but has a difarent y value. this violates the definition of a funciton