In the Reaction: CH₃COOH(aq)+ NH₂^- (Aq)

In the reaction: CH₃COOH(aq) + NH₂^- (aq) CH₃COO^- (aq) + NH₃(aq) , the conjugate acid-base pairs are:

A) pair 1: CH₃COOH and CH₃COO^- ; pair 2: NH₂^- and NH₃
B) pair 1: CH₃COOH and NH₃; pair 2: NH₂^- and CH₃COO^-
C) pair 1: CH₃COOH and NH₂^- ; pair 2: NH₃ and CH₃OO^-
D) pair 1: CH₃COOH and CH₃COO^- ; pair 2: NH₄⁺ and NH₃
E) pair 1: CH₃COOH and CH₃COO^- ; pair 2: NH₂^- and NH₃⁺