A smelter wants to produce 15.0 kg of Al(s) in exactly 24.0 h by electrolyzing molten Al₂O₃. The process operates at a current efficiency of 82.0 %. For the half-reaction Al³⁺ + 3 e⁻ → Al(s), what average current must be supplied to meet the production goal?
(Faraday constant: F = 9.65 × 10^{4} C mol⁻¹; atomic mass of Al = 26.98 g mol⁻¹)
a) 1.52×103A
b) 6.81×103A
c) 2.27×103A
d) 1.87×103A