The cash flows for three different alternatives are given in table below. MARR =10%. Alt. A Alt. B Alt. C Initial cost $5,000 9,000 7,500 Annual benefits $1,457 2,518 2,133 RoR 14% 13% 12.4% Life in years AIRR for the first increment (Alt. C-Alt. A) is. O 11.85% O 11.00% O9.38% O 10.12% 5