An air sample made up of only four gases is analysed. Which row gives the percentage composition of the air sample?
- A99.0%: $78.0\%$ nitrogen, $21.0\%$ oxygen; 0.9%: argon; 0.1%: carbon dioxide
- B99.0%: $78.0\%$ nitrogen, $21.0\%$ oxygen; 0.9%: carbon dioxide; 0.1%: argon
- C99.0%: $78.0\%$ oxygen, $21.0\%$ nitrogen; 0.9%: argon; 0.1%: carbon dioxide
- D99.0%: $78.0\%$ oxygen, $21.0\%$ nitrogen; 0.9%: carbon dioxide; 0.1%: argon