Which of the following statements describes the first step in the mechanism of the aldol condensation?
o the carbonyl oxygen of one aldehyde attacks the carbonyl carbon of another.
o an alpha hydrogen is abstracted by the base to form an enolate anion.
o the carbonyl oxygen is protonated by the base ion.
o a nucleophilic base attacks the carbonyl carbon atom.
o the alpha hydrogen is abstracted by an acid to the enolate anion. a moving to another question will save this response.