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. BF₃, O₃, SF₆, XeF₆
B. BeCl₂, CO₂, BCl₃, CHCl₃
C. NO₂, NH₃, POCl₃, CH₃Cl
D. SO₂, C₆H₅Cl, H₂Se, BrF₅