Mustafa Enterprises makes a variety of products that it sells to other businesses. The company's activity-based costing system has four activity cost pools for assigning costs to products and customers. Details concerning that ABC system are listed below: The cost of serving customers, $2,737.00 per customer, is the cost of serving a customer for one year. Dahle Corporation buys only one of the company's products. The details of last year's purchases of this product are listed below: According to the ABC system, the total cost of the activity "Supporting assembly" for this customer this past year was closest to: $2,400.00$320.00$3.00$6,000.00