Be Copus Moody's credit rating Fixed-rate borrowing cost Floating-rate borrowing cost Aa 10.5% LIBOR Beta Baa 12.0% LIBOR + 1% a. Calculate the quality spread differential (QSD). b. What are the savings from the swap for each counterparty &for the swap bank. Assume Alpha desires floating-rate debt and Beta desires fixed-rate debt. A swap bank is involved as an intermediary. Assume the swap bank is quoting five-year dollar interest rate swaps at 10.7%-10.8% against LIBOR flat