Organize the items listed into the proper sequence of events for gas exchange
a: O2 is transported to cells by circulatory system.
b: O2 is drawn into the lungs during inhalation.
c: Cells use O2 and generate CO2.
d: CO2 is exhaled.
e: The circulatory system transports CO2 to the lungs.
A. a, b, c, d, e
B. b, a, c, d, e
C. b, a, c, e, d
D. c, e, d, a, b
E. e, d, c, b, a
C
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