which of these molecules are alcohols? check all that apply. a a three carbon chain. all carbons are bonded to h atoms. b a three carbon chain. the outer carbons are bonded to h atoms and the middle carbon is bonded to one h atom and one o h group. c a three carbon chain. the outer carbons are each bonded to 2 h atoms and an o h group. the middle carbon is bonded to 2 h atoms. d a three carbon chain. the first carbon is bonded to 3 h atoms, the middle to 2 h atoms, and the third double bonded to an o atom and single bonded to an h atom. e a three carbon chain. the first carbon is bonded to 3 h atoms, the second to 2 h atoms, and the third is double bonded to an o atom and single bonded to an o h group. f an oxygen atom bonded to two hydrogen atoms.