Choose the correct option of temperature at which carbon reduces FeO to iron and produces CO.

(i) Below temperature at point A.

(ii) Approximately at the temperature corresponding to point A.

(iii) Above temperature at point A but below a temperature at point D.

(iv) Above temperature at point A.

Correct Answer: (iv) Above temperature at point A

Explanation: The above temperature at point A is the temperature at which carbon reduces FeO to iron and produces CO.