1. Aramco must install antipollution equipment in a new refinery to meet Saudi clean-air standards. Four design alternatives are being considered, which will have capital investment and annual operating expenses as shown below. Determine which design should be selected on the basis of the PW method. The present worth of "D1" is closest to :

A.(D1= $4,650,987 D2=$4,662,233)

B.(D1= $4,600,987 D2=$4,662,233)

C.(D1= $4,600,987 D2=$4,602,233)