Use the Following Diagram to Answer the Next Problem

Multiple Choice

Use the following diagram to answer the next problem. An ideal heat engine uses 0.01 mol of gas and operates between a hot reservoir at
T_H = 400 K and cold reservoir at T_L = 300 K, in a cycle from a→b→c→d→a. From a→b the gas undergoes an isothermal expansion, changing its volume from Va to 2.5Va. From b→c, the pressure is reduced at a constant volume. From c→d, the gas undergoes an isothermal compression, and from d→a, the pressure is increased at a constant volume until the gas is back at the original condition at a.

-How much work is obtained from the engine in each cycle?

A) 22.9 J
B) 30.5 J
C) 7.62 J
D) 8.31 J
E) 0.917 J