Your computer manufacturing firm must purchase 9 comma 000 keyboards from a supplier. One supplier demands a payment of $ 81 comma 000 today plus $ 9 per keyboard payable in one year. Another supplier will charge $ 19 per? keyboard, also payable in one year. The? risk-free interest rate is 8 %. a. What is the difference in their offers in terms of dollars? today? Which offer should your firm? take? b. Suppose your firm does not want to spend cash today. How can it take the first offer and not spend $ 81 comma 000 of its own cash? today?