Which row gives the correct pairing of muscle contractions and the pressure in the thorax during expiration?
- Ainternal intercostal muscles contracted; external intercostal muscles contracted; diaphragm contracted; pressure in thorax high
- Binternal intercostal muscles contracted; external intercostal muscles relaxed; diaphragm relaxed; pressure in thorax high
- Cinternal intercostal muscles relaxed; external intercostal muscles contracted; diaphragm contracted; pressure in thorax high
- Dinternal intercostal muscles relaxed; external intercostal muscles relaxed; diaphragm relaxed; pressure in thorax low