Which set correctly lists the four groups bonded to the central (alpha) carbon in the standard amino acid structural template?

Hydrogen atom, amine group, methyl backbone, and R group which is identical across all 20 amino acids and therefore does not affect their properties

Hydroxyl group, sulfur-containing thiol group, phosphate group, and variable R side chain that determines hydrophobicity and size

Hydrogen atom, phosphate group, carboxyl group, and R group containing a nitrogen atom in every amino acid

Hydrogen atom, amine group (—NH2), carboxyl group (—COOH), and variable R (side chain)