Fe is produced in a reactor using pure Fe2O3, C and O2. For every mole of Fe produced, 2.38 moles of C is used. The exit gas from the reactor contains CO and CO2 in the molar ratio of 1:1. How many moles of O2 is consumed for every mole of Fe produced?
(A) 1.035 (B) 2.072 (C) 0.513 (D) 4.147