In the Free Expansion of a Gas

Multiple Choice

In the free expansion of a gas,

A) the work done is zero but the heat transfer and change in internal energy may not be zero
B) the heat transfer is zero but the work done and the change in internal energy may not be zero
C) the change in internal energy is zero but the work done and the heat transfer may not be zero
D) the work done, the heat transfer, and the change in internal energy all may not be zero
E) the work done, the heat transfer, and the change in internal energy all are zero