An Ideal Gas Undergoes a Cyclic Expansion and Compression Along $\to$

An ideal gas undergoes a cyclic expansion and compression along the path a $\to$ b $\to$ c $\to$ a as shown above. The work done along b $\to$ c of the cycle is the area

A) shaded blue.
B) shaded yellow.
C) shaded blue and yellow.
D) negative of the area shaded blue.
E) negative of the area shaded yellow.