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Question

During the extraction of iron in the blast furnace:

A
Coke acts as reducing agent in the lower zone and CO acts as reducing agent in the upper zone
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B
CO acts as reducing agent in the lower zone and coke acts reducing agent in the upper zone
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C
Coke acts as reducing agent in the lower zone and CO acts as reducing agent in the lower zone
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D
CO acts as reducing agent in the upper zone and Coke acts as reducing agent in the zone.
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