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 $3,400 $1,200 EUAB $1,400 $1,000 $400 Salvage Value $400 SO SO The AB/AC ratio for the third increment, (A-B) is. Alt. D Do Nothing SO SO SO 0.84 0.92 0.75 0.69