D.
one way to write a quadratic equation is using the y = (x-s) (x-r) where r and s are positive zeros.
another way to solve this and think about it would be to plug in your points and equate both sides.
example:
(3,0) (8,0)
0 = (3-8) (3-3)
0 = 0
0 = (8-8) (8-3)
0=0
