The correct options are
A IUPAC name is 2-amino-4- formyl-3-methyl hex-3-enoic acid.
B Degree of unsaturation is 3.
C It contain primary amine, aldehyde & carboxylic acid functional groups.
Correct statements regarding the given compound are A, B and C.
(A) IUPAC name is 2-amino-4- formyl-3-methyl hex-3-enoic acid.
The parent chain contains 6 carbon atoms and a C=C double bond and a COOH group. Hence, it is called hex-3-enoic acid.
One amino, one formyl and one methyl substituent are present.
(B) Degree of unsaturation is 3 as 3 double bonds are present. One is carbon carbon double bond, other is C=O double bond of aldehyde group and one is C=O double bond of −COOH group.
(C) It contains primary amine aldehyde and carboxylic acid functional groups
(D) Number of carbon atom in parent chain is 6.