The correct IUPAC name of the compound

1.	The correct IUPAC name of the compound
A.	6-Ethy1-1-methy1-4-oxohept-6-ene-1-suplphonic acid
B.	7-Ethy1-5-oxooct-7-ene-2-sulphonic acid
C.	2-Ethy1-7-sulphooct-1-ene-4-one
D.	7-Methylene-5-oxononane-2-sulphonic acid
Answer» C. 2-Ethy1-7-sulphooct-1-ene-4-one

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The correct IUPAC name of the compound

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