According to the following diagram,which of the following option is correct ?

Options

A. B can reduce `CO_(2)` above `800^(@)C`
B. C can reduce `AO_(2)` below `600^(@)C`
C. Both B and A can reduce `CO_(2)` above `400^(@)C`
D. A can reduce both `BO_(2)` and `CO_(2)` below `600^(@)C`

Explanation

(i) `A + BO_(2) rarr AO_(2) + B, Delta_(rxn) G^(@)`
(ii) `A+ CO_(2) rarr C+AO_(2), Delta_(rxn) G^(@)`
Below `600^(@) , Delta _(rxn)G^(@)` for both the reaction (i) and (ii) is negative.