Ms. Inga Lott quits her $40,000-a-year job, withdrew $100,000 (which would have earned 10% per year in interest) from her bank to buy capital, and opened a solar energy contracting firm. In the first year, Inga’s sales were $105,000 and she paid $55,000 to cover all explicit costs, except her own salary. What is Inga’s economic profit? (Assume no depreciation).
A. -$9,000 (she made a loss).
B. $0 (she just broke even).
C. $10,000.
D. $50,000.