3. The following table shows the borrowing opportunities for two firms. Firm A can borrow at a floating rate at LIBOR+0.50\%. However, Firm A would prefer to raise the money by issuing 5 -ycar fixed-rate notes at 11.25%. On the other hand, Firm B considers issuing 5-year fixed rate Eurodollar bonds at 9.25%, while it would make more sense for Fim B to borrow at a floating rate at LIBOR-0.50\%. Finally, the swap bank makes the following offers to both firms. Interest Rate Swap a) What is the total gain for this swap? In other words, figure out QSD (quality spread differential). (25points) b) Figure out the gain for Swap bank. (25points) c) Figure out the gains for Firm A and Firm B, respectively. (40points)