Which one out of given below correctly represents the structural formula of the basic amino acid?
C
D
A
B
A. It is the structure of glutamic acid which is an acidic amino acid.
B. It is the structure of serine which is an acidic amino acid.
C. It is a neutral amino acid.
D. It is the structure of lysine which is a basic amino acid. These have 2 amino groups and 1 carboxyl group.