For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be___________________?

For efficient performance of a blast furnace, the extent of reduction

1.	For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be___________________?
A.	100% indirect reduction
B.	100% direct reduction
C.	50-60% indirect reduction
D.	30-40% indirect reduction
Answer» D. 30-40% indirect reduction

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For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be___________________?

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