The following names are all incorrect. Draw the structure represented by the incorrect name (or a consistent structure if the name is ambiguous), and give your drawing the correct name.
(a) cis-2,3-dimethyl-2-pentene
(b) 3-vinylhex-4-ene
(c) 2-methylcyclopentene
(d) 6-chlorocyclohexadiene
(e) 2,5-dimethylcyclohexene
(f) cis-2,5-dibromo-3-ethylpent-2-ene