Which row indicates the properties of an ionic compound?
- Aelectrical conductivity of solid: good; melting point $98\,^\circ\text{C}$
- Belectrical conductivity of solid: good; melting point $3652\,^\circ\text{C}$
- Celectrical conductivity of solid: poor; melting point $78\,^\circ\text{C}$
- Delectrical conductivity of solid: poor; melting point $801\,^\circ\text{C}$