Acidic amino acids have two-COOH groups and one `-NH_(2)` group per molecule. Select the pair that consists of acidic amino acids.

Options

A. Aspartic acid, glutamic acid
B. Lysine, arginine
C. Glycine, alanine
D. Both (a) and (b)

Answer

A

Explanation

Lysine and arginine are basic amino acids whereas glycine and alanine are neutral amino acids.