The pie charts illustrate the proportions of gases in samples of inspired and expired air. Which segments correspond to which gases?
- Asegment 1: nitrogen; segment 2: other gases; segment 3: oxygen
- Bsegment 1: nitrogen; segment 2: oxygen; segment 3: other gases
- Csegment 1: oxygen; segment 2: other gases; segment 3: nitrogen
- Dsegment 1: oxygen; segment 2: other gases; segment 3: carbon dioxide