Smith Company sells its products at $620 per unit, net 30. The firm's gross margin ratio is 40 percent. The firm has estimated the following operating costs: Activity Cost Driver and Rate Sales calls $ 460 per visit Order processing $ 130 per order Deliveries $ 80 per order + $0.50 per mile Sales returns $ 90 per return and $3 restocking per unit returned Smith Company has gathered the following data pertaining to activities it performed for two of its customers NINTO 2 2,060 XBT Number of orders 16 Number of parts per order 560 Sales returns Number of returns 4 Number of units returned (per return) 52 Number of sales calls 12 Miles per delivery 10 Shipping terms YOB, Factory What is Smith's totat customer unit-level cost apilable to XBT as a customer? 10 50 10 20 POB, Destination Multiple Choice $6.444 What is Smith's total customer unit-level cost applicable to XBT as a customer? Multiple Choice $6,444 $624 $4,210. $80. $4,269