If a mixture of FeO and Fe₃O₄ contains 75% Fe, what will be the percentage amount of each oxide in the mixture? 

(A) 64.10% FeO and 35.90% Fe₂O₃ 

(B) 50% FeO and 50% Fe₂O₃ 

(C) 75% FeO and 25% Fe₂O₃ 

(D) 35.90% FeO and 64.10% Fe₂O₃ 

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