A Cyclic Process Is Carried Out on an Ideal Gas

Multiple Choice

A cyclic process is carried out on an ideal gas such that it returns to its initial state at the end of a cycle, as shown in the pV diagram in the figure. If the process is carried out in a clockwise sense around the enclosed area, as shown on the figure, then the change of internal energy over the full cycle

A) is positive.
B) is negative.
C) is zero.
D) cannot be determined from the information given.