A student monitors the rate of reaction between marble chips, $\text{CaCO}_3$, and dilute hydrochloric acid. $\text{CaCO}_3 + 2\text{HCl} \rightarrow \text{CaCl}_2 + \text{CO}_2 + \text{H}_2\text{O}$ Which diagrams show the apparatus that is suitable for this experiment when used with a stopwatch?
- A1 only
- B1 and 2 only
- C2 and 3 only
- D1, 2 and 3