2. What is the factored form of the polynomial function
y=x + x3 - 7x2 - X+6 ?
A. f(x) = (x-1)(x-2)(x-3)(x-2)
B. f(x) = (x+1)(x+2)(x-3)(x-3)
C. f(x) = (x+1)(x-2)(x-3)(x+3)
D. f(x) = (x+1)(x-2)(x+3)(x-1)​