Fence Industries is preparing its annual profit plan. As part of its analysis of the profitability of its customers, management estimates that the $13,500 for sales support should be assigned to the individual customers from the information given as follows: Customer A Customer B Units purchased 175,000 275,000 Purchase orders (annual) 6 24 What is the amount of the sales support costs that should be allocated to Customer B, assuming Fence uses purchases orders to compute activity-based costs? $8,250 $2,700. $10,800 O $5,250