At the temperature corresponding to which of the points in Fig.6.1, FeO will be reduced to Fe by coupling the reaction 2FeO → 2Fe + O2 with all of the following reactions?
(a) C + O2 → CO2 (b) 2C + O2 → 2CO and (c) 2CO + O2 → 2CO2
(i) Point A
(ii) Point B
(iii) Point D
(iv) Point E