Which of These Neutralization Reactions Has a PH < 7

Multiple Choice

Which of these neutralization reactions has a pH < 7 when equal molar amounts of acid and base are mixed?

A) CH₃CO₂H(aq) + NaOH(aq) ⇌ H₂O(l) + NaCH₃CO₂(aq)
B) HCl(aq) + C₅H₅N(aq) ⇌ C₅H₅NHCl(aq)
C) HCl(aq) + NaOH(aq) ⇌ H₂O(l) + NaCl(aq)
D) H₂SO₄(aq) + 2 KOH(aq) ⇌2 H₂O(l) + K₂SO₄(aq)