The diagram represents a quantity of gas trapped in a cylinder beneath a piston. The piston may be shifted to the left or to the right. The gas temperature remains constant. Which row gives the effect of moving the piston slowly in the direction indicated in the table?
- Amovement of piston: to the left; speed of gas molecules: increases; pressure of gas: decreases
- Bmovement of piston: to the left; speed of gas molecules: no change; pressure of gas: increases
- Cmovement of piston: to the right; speed of gas molecules: increases; pressure of gas: decreases
- Dmovement of piston: to the right; speed of gas molecules: no change; pressure of gas: increases