The graph above shows the titration curves of four monoprotic acids of varying strengths. All of the acids start out at 0.1 M concentration and 25.0 mL volume. Choose all of the correct statements about these titration curves from the choices below. The titration curve labelled "D" is generated by the strongest acid in the series. The weaker the acid the higher its pH value at the beginning of the titration. In the curves shown above all acids require the same amount of NaOH for neutralization. The stronger the acid the higher its pH value at the beginning of the titration. The pKb of the acid which generates curve "C" is about 10. The pKa values of acids "A" - "C" are their pH values at 0 mL of NaOH.