Out of C and CO which is a better reducing agent for ZnO ?

Explanation

From Ellingham diagram,
At temperature above 1120 K,
`Delta_f G_((C","CO))^(@) < Delta_fG_((Zn"," ZnO))^@` and at temperature above 1323 K
`Delta_fG_((C"," CO_2)) < Delta_fG_((Zn"," ZnO))^(@)`
However, `Delta_fG_((CO"," CO_2)) < Delta_fG_((Zn"," ZnO))^(@)`
Hence, carbon is better reducing agent than CO. The reduction of zinc is carried out at 1673 K.
`ZnO + C overset(1673 K)(rarr) Zn + CO`.