Al₂O₃ is reduced by electrolysis at low potentials and high currents. If 4.0×10⁴ amperes of current is passed through molten Al₂O₃ for 6 hours, what mass of aluminium is produced? (Assume 100% current efficiency, at. mass of Al = 27g mol⁻¹)
A. 1.3×10⁴g
B. 9.0×10³g
C. 8.1×10⁴g
D. 2.4×10⁵g