In ${\mathrm{SF}}_6$ molecule

Bond are polar due to difference in electronegativity but molecule is non polar because $\mathrm{\mu }=0$.

In ${\mathrm{SF}}_6$ molecule$\mathrm{S}-\mathrm{F}$  bond is polar due to an electronegativity difference between sulfur and fluorine. But Sulfur hexafluoride is a non polar compound in nature because as per VESPER theory six fluorine atoms are arranged symmetrically with sulfur atoms such that $\mathrm{S}-\mathrm{F}$bond gets cancel out making its dipole moment zero hence, SF₆  is nonpolar compound or molecule.

Hence, the correct option is option (A) bonds are polar but molecule is non polar.