Correct statements form the graph

I) Above 1073K, `DeltaG^(0)` for the formation of `Fe_(2)O_(3)` is less negative than `DeltaG^(0)` for the formation of CO from carbon
II) Above 1073K, Carbon can reduce `Fe_(2)O_(3)`
III) Below 1073K, CO can reduce `Fe_(2)O_(3)`
IV) In blast furnace, reduction of `Fe_(2)O_(3)` occurs in different temperature ranges with below 1073K by CO (or) above 1073K by carbon

Options

A. Only I
B. I, II only
C. I, II, III only
D. All

Answer

D

Explanation

If `DeltaG=-ve` the process is spontaneous