The SRC of GIMPA is considering the installation of a stand-by generator at its new site. The following proposal has been submitted to you as Project Manager for advice. Please use NPV method to determine which of the two models of generators should be purchased. There are no salvage values. The rate of interest is 6% SCHEME A SCHEME B Initial cost 134,500 86,800 Annual running cost Annual Maintenance cost 7,100 5,850 16,300 12,430 Major repairs in the 5th year 25,346 32,000 10 10 Life of facility