4. Monioaclinton Ltd., a wholesale importer, is in the process of issuing $6,000,000 of 12% coupon debt with a maturity of 5 years. A sinking fund must he established to retire 60% of the issue prior to maturity. Assuming the bonds are retired at par and the tax rate i535%, how large must the annual sinking fund payments be if the firm wishes to retire the bonds in equal installments over 4 years starting one year from now? What will he the annual aftertax cash outow for each of the 5 years