C-11-Q130mediumsingle_mcqThe structural formula of ethene is—aCH3−CH3\mathrm{CH_3{-}CH_3}CH3−CH3bCH2=CH2\mathrm{CH_2{=}CH_2}CH2=CH2cCH≡CH\mathrm{CH{\equiv}CH}CH≡CHdCH3−OH\mathrm{CH_3{-}OH}CH3−OH