Data for four mutually exclusive alternatives are given in the table below. Assume a life of 7 years and a MARR of 9%, Alt. A Alt. B Alt. C Initial Cost $5,600 EUAB $1,400 Salvage Value $400 $3,400 $1,000 SO $1,200 $400 SO Alt. D Do Nothing SO SO SO The AB /AC ratio for the first increment, (C-D) is. 1.19 0.84 1.68 1.86