Arrhenius equation is $\mathrm{K}={\mathrm{Ae}}^{-\frac{{\mathrm{E}}_{\mathrm{a}}}{\mathrm{RT}}}$. In this equation ${\mathrm{e}}^{-\frac{{\mathrm{E}}_{\mathrm{a}}}{\mathrm{RT}}}$ represents fraction of molecules

having kinetic energy less than 2 E_a

having kinetic energy greater than E_a

having kinetic energy less than E_a

having  E_a greater than kinetic energy