Which alternatives can be eliminated immediately in the first step of incremental rate of return analysis, if MARR = 12.0%?

Which increment should be examined first in incremental rate of return analysis, if MARR = 10.0%?

Do-nothing A B C D
First cost 0 $8,500 $5,500 $9,000 $4,500
Annual benefit 0 1,413 993 1,593 701
Life 10 yrs
ROR 10.5% 12.5% 12.0% 9.0%

O D only
O D and A
O D and B
O D and C