5. Upon graduating with an accounting degree, you open your own accounting firm of which you and your assistant are the only employees. To start the firm you passed on a job offer with a large accounting firm that offered you a salary of $50,000 annually. Last year you earned a total revenue of $120,000. Rent and supplies last year were $50,000. Your assistant's salary is $30,000 annually. Your accounting profit was a. -$10,000. b. $40,000. C. $70,000. d. $80,000