9. Halka Company buys on terms of 3/10, net 80 days. It does not take discounts, and it typically pays on time, 80 days after the invoice date. a. What is the nominal annual percentage cost of its non-free trade credit? (2 marks) b. What is the effective annual percentage cost of its non-free trade credit? (2 marks) c. If the company's net purchases amount to $500,000 per year. On average, how much "free" trade credit does the firm receive during the year? (2 marks) d. If the firm could raise funds from a bank at an annual percentage rate of 16.5% compounding monthly, should it use a bank loan or additional trade credit? Explain. (4 marks)