A Swimmer Cannot Use a Long Hose to Snorkel More

Multiple Choice

A swimmer cannot use a long hose to snorkel more than a meter deep because air

A) in the lungs cannot easily be expelled.
B) is buoyed up leaving the swimmer breathless.
C) tends to liquify in the snorkel tube.
D) at the surface will not freely enter the higher-pressure region in the compressed lungs.
E) all of these