AireAsia, headquartered in Kunming, China, needs US$5,000,000 for one year to finance working capital. The airline has two alternatives for borrowing: i. Borrow US$5,000,000 in Eurodollars in London at 2.50% per annum ii. Borrow HK$38,750,000 in Hong Kong at 4.00% per annum, and exchange these Hong Kong dollars at the present exchange rate of HK$7.75/US$ for U.S. dollars. At what ending exchange rate would AireAsia be indifferent between borrowing U. S. dollars and borrowing Hong Kong dollars? a. HK$7.75/US$ b. HK$7.8074/US$ c. HK$7.8634/US$ d. None of the above