Ellie has been working for an engineering firm and earning an annual salary of $80,000. She decides to open her own engineering business. Her annual expenses will include $15,000 for office rent, $3,000 for equipment rental, $1,000 for supplies, $1,200 for utilities, and a $35,000 salary for a secretary/bookkeeper. Ellie will cover her start-up expenses by cashing in a $20,000 certificate of deposit on which she was earning annual interest of $500. Refer to Scenario 13-9. According to an economist, which of the following revenue totals will yield Ellie’s business $50,000 in economic profits? a. $100,200 b. $55,200 c. $132,500 d. $185,700