C-11-Q131mediumsingle_mcqThe structural formula of propene is—aCH3−CH2−CH3\mathrm{CH_3{-}CH_2{-}CH_3}CH3−CH2−CH3bCH3−CH=CH2\mathrm{CH_3{-}CH{=}CH_2}CH3−CH=CH2cCH≡C−CH3\mathrm{CH{\equiv}C{-}CH_3}CH≡C−CH3dCH2=CH2\mathrm{CH_2{=}CH_2}CH2=CH2