The total sales of a company (in millions of dollars) t months from now are given by S(t) = 0.05t' + 0.21- + 4t + 8. (A) Find S'(t). (B) Find S(5) and S'(5) (to two decimal places). (C) Interpret S(12) = 171.20 and S'(12) = 30.40 (A) S'(1) = B) S(5) = S (5) =