Use the revenue and cost functions below, to answer parts (A), (B), and (C). K R(x) = 80x - 3x2 15x5 20 C(x) = 120+ 15x 1sxs 20 O A. [0,228] O B. [0,80] O C. [0,20] . . .. D. [1,20] (B) Complete the table. Profit Profit x (Millions) P(x) (Millions $) 1 - 58 4 8 12 16 20