Behold the Molecule Hydroxyproline, Drawn in Its Un-Ionized Form

Multiple Choice

Behold the molecule hydroxyproline, drawn in its un-ionized form. Hydroxyproline is an important constituent (in combined form) of collagen. Which correctly describes the functional groups in hydroxyproline?
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A) alcohol, amine, carboxylic acid
B) alcohol, amide, carboxylic acid
C) amide, amine, carboxylic acid
D) ester, carboxylic acid, amine
E) None of these lists all of the functional groups correctly.