已知集合$A=\left\{x|x>2\right\},B=\left\{x|1<x<3\right\}$，则$A\cap B=$

$\left\{x|x>2\right\}$ $\left\{x|x>1\right\}$ $\left\{x|2<x<3\right\}$ $\left\{x|1<x<3\right\}$