A student association has hired a musical group for a graduation party. The cost will be a fixed amount of $10,010. Required 1. Suppose 550 people attend the party. What will be the total cost of the musical group? What will be the unit cost per person? 2. Suppose 7,700 people attend the party. What will be the total cost of the musical group? What will be the unit cost per person? 3. For prediction of total costs, should the manager of the party use the unit cost in requirement 1 or the unit cost in requirement 2 ? What is the major lesson of this problem? The total cost of the musical group is \$ The unit cost per person is $ The total cost of the musical group is \$ The unit cost per person is $ For prediction of total costs, should the manager of the party use the unit cost in requirement 1 or the unit cost in requirement 2 ? A. The manager of the party should use the unit cost from requirement 1 because an overestimate of cost is better than an underestimate. B. The manager of the party should not use either unit cost because the total costs are not affected by the attendance. C. The manager of the party could use both unit costs because both values are legitimate and can be used at any time. What is the major lesson of this problem? A. Changes in the number of cost driver units do not affect both total variable costs and total fixed costs. B. Changes in the number of cost driver units affect total variable costs and total fixed costs. C. Changes in the number of cost driver units do not affect total variable costs but affect total fixed costs. D. Changes in the number of cost driver units affect total variable costs but do not affect total fixed costs