At the Microscopic Level, the Difference Between Gases and Solids

At the microscopic level, the difference between gases and solids is that

A) there is much more distance (at least 10 times more) between neighboring atoms in a gas than between neighboring atoms in a solid.
B) the gas's atoms move throughout the gas, while the solid's atoms remain near their original locations.
C) in a gas, the individual atoms are larger.
D) both answers A and B are correct.
E) both answers B and C are correct.