Which alternative should be selected using incremental rate of return analysis, if MARR = 11.5%? Do-nothing A B C D First cost 0 $9,000 $7,000 $9,000 $3,500 Annual 0 1,593 1,368 1,725 557 benefit Life 10 yrs ROR 12.0% 14.5% 14.0% 9.5% OC, because the C-B increment has a ROR of 12.22% and the A-B increment has a ROR of 2.16% O something other than C, because C costs the most initially OC because C has the highest annual benefit B, because its ROR is the highest