A firm wishes to distribute its tota | production between two manufacturing plants. A and B. A contour map of their total cost function is below, where all num bers are in 1000's. If the firm decides to produce 25 000 units at plant A. and 5 000 units at plant B, what & the approximate total cost of production? 70 - 80 30 60 - 70 50 - 60 H produced of Plant B (10005) 20 40 - 50 30 - 40 10 20 - 30 10 - 20 0 - 10 10 20 30 # produced at Plant A (1000s) in 10008 2 3) 60 020