(Not a repeat question.) The Parts Department of Reliable Plumbing Supplies provides parts to professional plumbers. The Department is open 40 hours per week, 50 weeks a year to handle customer requests. The Department has 10 employees who are all cross-trained; all work 2,000 hours per year. They perform three activities: - Maintain parts inventory, which involves forecasting demand for parts, reviewing part quantities each day, ordering additional parts as inventory diminishes, and keeping the storage area clean so parts can be accessed by busy clerks. Four employees maintain parts inventory. - Fill over-the-counter orders, which requires answering questions about parts needed, providing advice and information about parts, filling orders, and maintaining records on part requests. During the year, employees filled 20,000 over-the-counter customer orders with an average of 2.5 parts per order. Three employees fill over-thecounter orders. - Fill and Ship phone/mail orders, which require selecting proper parts, packaging, and maintaining records of requests. During the year, these employees fulfill 10,000 customer phone/mail orders with an average of 5.0 parts per order. Three employees fill and ship phone/mail orders. The following cost data is available for the department: Item Information Amount Salaries and benefits Average salary and benefits is $40,000 In the department \" $400,000' Rent and 60% of the space is used for inventory 8. inventory maintenance; 10% is for counter service . . . . . 300,000 occupancy cost and the remained is for filling mail orders Equipment Used by employees to perform their tasks; necessary for all activities \" 50,000' DepreCIation Parts Average cost is $25 per part requested 1,750,000 Total $2,500,000 Refer to the original data table but assume that the activity cost is $5.00 per part requested to " maintain parts inventory" and the activity "fill and ship phone/mail order" costs $21.00 per order. Assume the average selling price per part is $35.00, refer to the table for the price per part. The profit on an phone/mail order for 5 parts is: A A. $129.00 A B. Some other figure A C. $45.00 A D.$25.00 A E. $4.00