Poly(lactic acid) (PLA) is a widely used biodegradable polymer developed to address global environmental challenges related to plastic waste. The repeating unit of PLA is shown below:
Upon complete acid hydrolysis of PLA, which of the following is the correct systematic IUPAC name of the single organic monomer produced?
2-hydroxypropanoic acid2\text{-hydroxypropanoic acid}2-hydroxypropanoic acid
3-hydroxypropanoic acid3\text{-hydroxypropanoic acid}3-hydroxypropanoic acid
2-hydroxybutanoic acid2\text{-hydroxybutanoic acid}2-hydroxybutanoic acid
2-hydroxy-2-methylethanoic acid2\text{-hydroxy-2-methylethanoic acid}2-hydroxy-2-methylethanoic acid