D. M. Ferguson and Associates is considering the three alternative sources of short-term funds shown here. What is the cost of each source?

1. Skipping the discount, with terms of 1/10, net 30, and paying on day 30

2. Borrowing from the bank at 10%, interest in arrears, with a 20% compensating balance requirement

3. Selling 90-day commercial paper, with a discount rate of 13%