In the Following Reaction in Aqueous Solution, the Acid Reactant $\leftrightarrows$

Multiple Choice

In the following reaction in aqueous solution, the acid reactant is ________ and its conjugate base product is ________.
CH₃COOH + NH₃ $\leftrightarrows$ CH₃COO^- + NH₄⁺

A) CH₃COOH; CH₃COO^-
B) CH₃COOH; NH₄⁺
C) NH₃; CH₃COO^-
D) NH₃; NH₄⁺
E) CH₃COOH; H₃O⁺