Suppose a Buffer Solution Is Made from Formic Acid,HCHO₂,and Sodium $\to$

Suppose a buffer solution is made from formic acid,HCHO₂,and sodium formate,NaCHO₂.What is the net ionic equation for the reaction that occurs when a small amount of sodium hydroxide is added to the buffer?

A) NaOH(aq) + H₃O⁺(aq) $\to$ Na⁺(aq) + 2H₂O(l)
B) H₃O⁺(aq) + OH^-(aq) $\to$ 2H₂O(l)
C) OH^-(aq) + HCHO₂(aq) $\to$ CHO₂^-(aq) + H₂O(l)
D) NaOH(aq) + HCHO₂(aq) $\to$ NaCHO₂(aq) + H₂O(l)
E) Na⁺(aq) + HCHO₂(aq) $\to$ NaH(aq) + HCO₂⁺(aq)