Let a and b be real numbers, where a ≠ b ≠ 0 which of the following functions could represent the graph on the right?

a.) f(x) = x (x – a)(x – b)2

b.) f(x) = (x – a)(x – b)2

c.) f(x) = x(x – a)³(x – b)

d.) f(x) = x2(x – a) 2(x – b)2