An economist resigns her $100,000/year university teaching position to work fulltime in her own consulting business. In the first year she has total revenue of $250,000 and expenses of $100,000. Which of the following statements is correct?

i. Her accounting profit was $250,000
ii. Her accounting profit was $150,000
iii. Her economic profit was $50,000
iv. Her economic profit was $150,000