Choose the three best reasons for why alveoli might collapse if one does not do the deep breathing ...

A Shallow breathing that does not fill her lungs will only move air into the alveoli in the upper part of her lungs, letting those in the lower part stay closed.
B The anesthesia was toxic to her lung cells, and she needs to clear it out of her alveoli as fast as she can.
C With her gall bladder removed, she cannot produce the soapy substance that lines alveoli and makes them easier to inflate.
D When she is lying down, it is harder for her to expand her chest cavity anyway. She needs to put extra effort into it.
E Surgery stimulated her sympathetic system, which has constricted her bronchioles and could lead to an asthma attack.
F The alveoli are lined with water, and attraction between the water molecules pulls them together. This surface tension will pull the alveoli closed if she does not open them with deep breathing.