As substance Q changes from solid to liquid, only the weak forces of attraction between its molecules are overcome. Which row gives the correct description of Q?
- Amelting point $44\,^{\circ}\text{C}$; non-conductor
- Bmelting point $98\,^{\circ}\text{C}$; conductor
- Cmelting point $660\,^{\circ}\text{C}$; conductor
- Dmelting point $714\,^{\circ}\text{C}$; non-conductor