Two air$-$filled parallel$-$plate capacitors with capacitances C$1$C$1$ and C$2$C$2$ are connected in parallel to a battery that has a voltage of $38\mathrm{.}0$ VV; C$1$C$1=3\mathrm{.}00$ FF and C$2$C$2=6\mathrm{.}00$ FF$.$ Does the insertion of the dielectric cause the total charge stored to increase or decrease?