Air is enclosed inside a cylinder by a piston. The air initially has volume $V$ and pressure $P$. The piston is moved to the left. The gas temperature remains constant. What are the new volume and the new pressure of the trapped air?
- Anew volume $2V$, new pressure $\frac{P}{2}$
- Bnew volume $2V$, new pressure $2P$
- Cnew volume $\frac{V}{2}$, new pressure $\frac{P}{2}$
- Dnew volume $\frac{V}{2}$, new pressure $2P$