Which of the below statements about the steel industry is true? O a. In the 70s the new technology of Direct Reduced iron produced a scrap substitute from iron ore called sponge iron that fed Ob....

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Extracted text: Which of the below statements about the steel industry is true? O a. In the 70s the new technology of Direct Reduced iron produced a scrap substitute from iron ore called sponge iron that fed Ob. integrated firms embracing a vertical integration strategy utilized electric arc furnaces to melt scrap steel Oc. Minimils utilized blast furnaces to melt iron ore O d. Technologically there are three groups of steel makers: integrated firms, minimills and specialty steel makers producing sp