Shum manufacturing, which uses the high-low method, makes a product called kwan. the company incurs three different cost types (a, b, and c) and has a relevant range of operation between 2,500 units and 8,000 units per month. per-unit costs at two different activity levels for each cost type are presented below. type a type b type c total 5,000 units $ 10 $ 27 $ 10 $ 47 7,500 units 10 18 9 37 if shum produces 8,000 units, the total cost would be: