restaurant has the following information about its costs and activities: Some costs, such as the cost of cleaning table cloths, vary with the number of parties served. Other costs, such as washing plates and glasses, depend on the number of meals, desserts or drinks served. Required (Show all calculations/working); A) Calculate the activity rates for each cost pool. B) Calculate the total cost of a party that ordered four meals, two desserts and three drinks. C) Calculate the total cost of a party that ordered two meals and six drinks. D) Calculate the total cost of a party that ordered one meal, one dessert and two drinks