Consider the following statements:A: The chemical and physical properties of amino acids are essentially of the amino, carboxyl and the R functional groups.B: In solutions of different pH, the structure of amino acids changes.Select the correct option.

The chemical and physical properties of amino acids are essentially of the amino, carboxyl and the R functional groups. Based on number of amino and carboxyl groups, there are acidic (e.g., glutamic acid), basic (lysine) and neutral (valine) amino acids. A particular property of amino acids is the ionizable nature of –NH2 and –COOH groups. Hence in solutions of different pH, the structure of amino acids changes.