Match the amino acid with its correct R group.

	Amino acid		R-group
P	Cysteine	I.	-CH2OH
Q	Serine	II.	-CH2 -CH2 -COOH
R	Glutamic acid	III	Aromatic group
S	Tyrosine	IV)	-CH2 -SH

• A

  P- I, Q – IV, R – II, S - III

• B

  P – IV, Q – I, R – II, S – III 

• C

  P – III, Q – IV, R – II, S – I 

• D

  P – II, Q – I, R – IV, S – III