The correct description of diaphragm is ( )
A.
When the diaphragm contracts, the diaphragmatic vault rises, which is essential for inspiration
B.
When the diaphragm contracts, the diaphragmatic vault descends, which is essential for inspiration
C.
When the diaphragm relaxes, the diaphragmatic dome rises, which is essential for expiration
D.
When the diaphragm relaxes, the diaphragmatic dome drops, which is essential for inspiration
E.
When the diaphragm relaxes, the diaphragmatic dome rises, which is essential for inspiration