Amino acids with the aliphatic ‘R’ group are

Q. Amino acids with the aliphatic ‘R’ group are

A.            Glycine, alanine, leucine

B.            Serine, threonine, cysteine

C.            Lysine, arginine, histidine

D.            Phenylalanine, tyrosine and tryptophan

Answer: Glycine, alanine, leucine