Will mark as Brainliest!

Which statements are true about the polynomial function? f(x) =x^3 - x^2 - 4x + 4

a. f(x)=0 when x=−1

b. f(x) divided by (x−1) has a remainder of 0.

c. (x−1) is a factor of f(x) .

d. f(−1)=0