At the end of a normal expiration, when outward air flow has ceased,
a. Intra-alveolar pressure is less than atmospheric pressure.
b. Intra-alveolar pressure is greater than atmospheric pressure.
c. Intra-alveolar pressure is equal to atmospheric pressure.
d. Intrapleural pressure is greater than atmospheric pressure.
e. Intrapleural pressure is greater than intra-alveolar pressure.
C
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