Each of the following options contains a set of four molecules. Identify the option(s) where all four molecules possess permanent dipole moment at room temperature.

A

$$BeCl_2, CO_2, BCl_3, CHCl_3$$

B

$$NO_2, NH_3, POCl_3, CH_3Cl$$

C

$$BF_3, O_3, SF_6, XeF_6$$

D

$$SO_2, C_6H_5Cl, H_2Se, BrF_5$$