A 4.56 cm³ sample of gold has a density of 19.3 g/cm³. What is the density of a sample of gold that is 4.56 cm x 8.56 cm x 5 cm expressed as g/cm³ ?

a) 12.2 g/cm³
b) 15.4 g/cm³
c) 17.9 g/cm³
d) 21.6 g/cm³