Factor f(x) into linear factors given that k is a zero of f(x).
f(x) = x³ - 4x² - 25x + 100; k = 5
Select one:
O A. (x - 5)(x + 4)(x + 5)
O B. (x - 5)(x-4)(x + 4)
OC. x(x - 5)(x-4)
OD. (x - 5)(x-4)(x + 5)