5- Refer to Table 2 below to answer the following questions Table 2 Mr. B's Taxi Service Annual Income Statement Revenue $ 100,000 Labor Expense 50,000 Maintenance 5,000 Expense Net Income $45,000 a. What is Mr. B's variable cost? b. What is Mr. B's fixed cost? c. What is Mr. B's total cost? d. What is Mr. B's economic profit? explain