What can be found if a child with Ⅲ grade (levels) laryngeal obstruction?
A
Stridor and dyspnea just can be found after activities with normal lung and heart sounds
B
Exhaustion，lethargy，shallow （weak） breathing，pallor，silent lung，arrhythemia，weak heart sound
C
Stridor and dyspnea
D
Dysphoria，cyanosis，sweating，reduced lung sound，tachycardiac，inspiratory recess of soft tissue
E
All of above are not correct