What was the purpose of using aq. NaOH in aldol condensation lab? A. It acts as an electrophile on which an enolate ion can attack B. It acts as a nucleophile which can attack an electrophilic carbonyl carbon. C. It acts as a base and deprotonates the ?-hydrogen atom. D. It acts as a solvent to dissolve the reactants. E. It was not used at all in aldol condensation lab.