Following diagram indicates the mechanism of breathing. Identify all the parts A, B, C and D correctly
A. A - Air expelled from lungs, B- Ribs and sternum raised, C- Diaphragm contracted , D- Volume of thorax decreased
B. A- Air expelled from lungs, B- Ribs and sternum raised, C- Diaphragm relaxed, D- Volume of thorax decreased
C. A - Air expelled from lungs, B- Ribs and sternum return to original position, C- Diaphragm relaxed, D- Volume of thorax decreased
D. A - Air entering into lungs, B- Ribs and sternum raised, C- Diaphragm contracted , D - Volume of thorax raised
