A piston-cylinder contains 0.1 kg air at 400 K, 100 kPa which goes through a polytropic compression process (n = 1.3) to a pressure of 300 kPa. How much work has been done by air in the process?

• A. -277 kJ
• B. -377 kJ
• C. -477 kJ
• D. -577 kJ