What would be the pH values when $($a$)0\mathrm{.}0090$ mol HCl and $($b$)0\mathrm{.}0090$ mol NaOH, added to $0\mathrm{.}300$ L of a buffer solution that is $0\mathrm{.}250$ M HC$2$H$3$O$2$ and $0\mathrm{.}560$ M NaC$2$H$3$O$2?$ If pKa $($HC$2$H$3$O$2)$ is $4\mathrm{.}74$

$2\mathrm{.}14,2\mathrm{.}04$

$4\mathrm{.}14,4\mathrm{.}04$

$5\mathrm{.}17,5\mathrm{.}02$

$3\mathrm{.}14,3\mathrm{.}04$