The table shows the melting points, densities and electrical conductivities of four elements. Which element is copper?
- Amelting point $-38.9\,^{\circ}\text{C}$, density $13.6\,\text{g cm}^{-3}$, good conductor
- Bmelting point $-7.2\,^{\circ}\text{C}$, density $3.12\,\text{g cm}^{-3}$, poor conductor
- Cmelting point $97.8\,^{\circ}\text{C}$, density $0.97\,\text{g cm}^{-3}$, good conductor
- Dmelting point $1083\,^{\circ}\text{C}$, density $8.96\,\text{g cm}^{-3}$, good conductor