Four students gather the gas formed when calcium carbonate reacts with dilute hydrochloric acid. Each student measures how long it takes to collect a certain volume of gas. Which results indicate the greatest average rate of reaction?
- A$15\,\text{cm}^3$ of gas collected in $20$ seconds
- B$50\,\text{cm}^3$ of gas collected in $40$ seconds
- C$75\,\text{cm}^3$ of gas collected in $80$ seconds
- D$90\,\text{cm}^3$ of gas collected in $100$ seconds