A three-component mixture of organic compounds in diethyl ether consists of a carboxylic acid, an amine base, and a neutral compound. After treatment with 3 M NaOH and thorough mixing, what compound(s) will be present as major components of the aqueous phase?
a) the amine hydrochloride salt
b) the carboxylic acid
c) the amine and the neutral compound
d) the sodium carboxylate salt