Which of the following correctly describes the image below? (2 points)

A single hydrogen atom bonded to a central carbon atom. An amino group and a carboxylic acid group both bonded to the central carbon atom. A side chain group, represented by the variable R, is attached to the central carbon atom.

Select one:

a. Protein Molecule

b. RNA Molecule

c. Amino Acid

d. Carboxylic Acid