The diagram illustrates a room being warmed by a radiator. The arrowed line from X to Y indicates the route taken by the convection current in the air. Which row correctly shows the 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