Consider the following general acid-base reaction for a titration HA(aq) + NaOH(aq) --> NaA(aq) + HO(l) Which of the following species would be the primary species in solution in the buffer region? The buffer region is the one between the start of the titration and the first equivalence point. Select ALL that apply. NaA(aq) NaOH(aq) OH (aq) HA(aq)