Q$-17$:$-$ What will be the total electric flux, $,$ if charges $q_1=1\mathrm{.}85{10}^{-12}C,q_2=-3\mathrm{.}0{10}^{-12}$

$C$ and $q_3=10\mathrm{.}0{10}^{-12}C$ and the constant ${}_0=8\mathrm{.}85{10}^{-12}N{m}^2{C}^{-2}$

$[$A$]8\mathrm{.}85{10}^{-12}N{C}^{-1}{m}^2$

$[$B$]2\mathrm{.}0N{C}^{-1}{m}^2$

$[$C$]1\mathrm{.}0N{C}^{-1}{m}^2$

$[$D$]$ All