The diagram illustrates the view inside a room that is heated by a radiator. The arrowed line from X to Y represents the route taken by the convection current in the air. Which row gives the correct air temperature and air density at X and at Y?
- Aair temperature higher at X, air density higher at X
- Bair temperature higher at X, air density higher at Y
- Cair temperature higher at Y, air density higher at Y
- Dair temperature higher at Y, air density higher at X