The correct option is A Aluminium
Non-metals are generally non-sonorous, non-ductile and poor conductors of electricity whereas metals are sonorous (produce ringing sounds on hitting), ductile (can be drawn into thin wires) and good conductors of electricity.
Phosphorus, Charcoal and Sulphur are non-metals whereas Aluminium is a metal.
Hence, X cannot be Aluminium metal.