Which of the following monomers form biodegradable polymers? (a) 3-hydroxybutanoic acid + 3-hydr...

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Which of the following monomers form biodegradable polymers?
(a) 3-hydroxybutanoic acid + 3-hydroxypentanoic acid
(b) Glycine \( + \) amino caproic acid
(c) Ethylene glycol + phthalic acid
(d) both (a) and (b)
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