What is the IUPAC name of the given compound

acetylcyclohexadiene 1-Cyclohexa-2,4-dienylethanone 6-cyclohexan-1,3-dienylethanone None of the these

1-Cyclohexa-2,4-dienylethanone

Functional group lies in the side chain, hence it is named as a derivative of ethanone