Explain how the answer is d: for a polynomial p(x) the value of p(3) is -2. which of the following must be true about p(x)? (a) x - 5 is a factor of p(x). (b) x - 2 is a factor of p(x). (c) x + 2 is a factor of p(x) (d) the remainder when p(x) is divided by x - 3 is -2.