Dexcon Technologies, Inc., is evaluating two alternatives to produce its new plastic filament with tribological (i.e., low friction) properties for creating custom bearings for 3-D printers. The estimates associated with each alternative are shown below. Using a MARR of 8% per year, which alternative has the lower present worth? Method First Cost M&O Cost, per Year Salvage Value Life DDM $-220,000 $ 40,000 $2,000 2 years LS S-400,000 $-30,000 $39,000 4 years The present worth for the DDM method is $ The present worth for the LS method is $ The Click to select) method is selected. n