Answer:
Process B should be used.
Explanation:
Total Cost = Fixed Cost + Variable Cost
Total Cost = Fixed Cost + (Average Variable Cost)x(Quantity)
Process A : TC = 2000 + (3)x(6000) = 2000 + 18000
= $ 20000
Process B : TC = 4000 + (2.60)x(6000) = 4000 + 15600
= $ 19600
Process C : TC = 8000 + (2.40)x(6000) = 8000 + 14400
= $ 22400
Since Total Cost for producing 6000 units quantity demanded is least by Process B , Process B should be used .