Question

when the muscle cell was without oxygen, Piruvate was brought to produce ...
1.ethyl-alcohol & ATP
2.methyl-alcohol & ATP
3.lactic & ATP
4.lactic & NAD+
I think the correct answer is 3 but the book answer 4.
I don't understand

Answer 1

3. is correct as ATP is produced through anaeobic respiration without the intermediatory NADH