In the titration of a weak acid HA with $0\mathrm{.}100$MNaOH, the stoichiometric point is known to occur at a $pH$ value of approximately $10.$ Which of the following indicator acids would be best to use to mark the endpoint of this titration? A$)$ indicator A$,K_a={10}^{-14}$ B$)$ indicator B$,K_a={10}^{-11}$ C$)$ indicator C$,K_a={10}^{-8}$ D$)$ indicator D$,K_a={10}^{-6}$ E$)$ none of these