C₉H₈O₄(aq) + NaOH(aq) ⇌ C₃H₇O₄ (aq) + Na (aq) + H₂O(l)
The reaction represented above occurs when 2.00 × 104 mol of pure acetylsalicylic acid, CH₃O₄, is completely dissolved in 15.00 mL of water in a flask and titrated to the equivalence point with 0.100 M NaOH (aq). Which of the following statements about the titration is true at the equivalence point?

A. [C₉H₈O₄] is greater than [CH7O₄]
B. [C₉H₈O₄] is less than [CH7O₄].
C. [C₉H₈O₄] is equal to [CH7O₄].
D. The relationship between [C₉H₈O₄] and [C₉H₇O₄] cannot be determined without additional information.