During Alcoholic Fermentation,why Is Pyruvate Converted to Ethanol

During alcoholic fermentation,why is pyruvate converted to ethanol?

A) to increase the efficiency of cellular respiration by producing additional molecules of ATP
B) to release O₂ as a by-product so that cellular respiration can continue
C) to create lactic acid that will stimulate muscle contraction
D) to recycle NADH back into NAD⁺ so that the cell can continue glycolysis