Which of the following_ statements is true?

A

Carbon dioxide diffuses from lungs into blood and oxygen diffuses from blood into lungs.

B

Carbon monoxide diffuses from lungs into blood and oxygen diffuses from blood into lungs.

C

Oxygen diffuses from lungs into blood and carbon dioxide diffuses from blood into lungs.

D

Oxygen diffuses from lungs into blood and carbon monoxide diffuses from blood into lungs.