Identify the option representing correct set of true/false statements :

Statement-1: ${\mathrm{TiO}}_3$ can behave as conductor or insulator depending upon temperature.
Statement-2: ${\mathrm{CrO}}_2$ has electrical properties like metals.

Statement-3: $\mathrm{AgBr}$can show both Frenkel as well as Schottky defects.

Because the energy difference between the valence band and conduction band changes with temperature, ${\mathrm{TiO}}_3$either behaves as a conductor or an insulator depending on the temperature.

Some common metal oxides, including ${\mathrm{CrO}}_2$, have similar electrical conductivity as metal.

$\mathrm{AgBr}\text{'}\mathrm{s}$intermediate radius ratio causes it to exhibit both Frenkel and Schottky faults. When both of the ion's anions and cations are missing from the crystal lattice, the ions have Schottky defects. Because the ${\mathrm{Ag}}^{+}$ and ${\mathrm{Br}}^{-}$ ions are missing from the crystal lattice in $\mathrm{AgBr}$, Schottky defects result.