Compare two alternatives, A and B, on the basis of a present worth evaluation using i=15% per year and a study period of 8 years, Alternative A B First Cost $ 13,000 $-45,000 Annual Operating Cost $-9,000 $-10,000 Overhaul in Year 4 SO $-2,250 Salvage Value $3,200 $9.000 Life 4 years 8 years The present worth of alternative Als $ and that of alternative B is $ Alternative A is selected