How do alcoholic and lactic acid fermentation differ?

Lactic acid fermentation occurs in some organims like Humans while alcohol fermentation occurs in organism e.g. yeast. Alcoholic fermentation produces CO2 gas , Lactic acid fermentation doesn't Both Recycle NADH into NAD+. And obviously the main difference is the product, one is Ethanol the other is Lactic acid.

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Well i had the same answer, so the correct answer would be a. but in this case it would be the one with plasma membrane and cell wall circled that is next to the hairy pill type of thing.