An unknown metal sample with a mass of 14.8 g was obtained. The sample displaces 0.767 mL of water. The densities of several metals are listed in the table.

Metal Density (g/mL)
aluminum 2.70
iron 7.87
cobalt 8.90
copper 8.96
gold 19.3

What is the possible identity of this metal sample?
copper
gold
cobalt
aluminum