In Comparing the Density of Bronze Composed of 20% Tin

In comparing the density of bronze composed of 20% tin (r =140 pm, 7.37 g/cm3) to the density of pure copper (r =128 pm, 8.92 g/cm³) ,

A) the density of the bronze is lower.
B) the density of the bronze is higher.
C) the density of the bronze is the same.
D) the density of the bronze depends on whether the tin or the copper occupies holes.
E) It cannot be determined as only the 1:1 intermetallic compound of tin and copper has ever been observed.