In experiment 1, small pieces of limestone are placed into dilute ethanoic acid at $40\,^{\circ}\text{C}$. The volume of carbon dioxide given off is recorded at fixed time intervals. The results are plotted on a graph. Which changes produce the results shown in experiment 2?
- Alarge lumps, $40\,^{\circ}\text{C}$
- Bpowder, $40\,^{\circ}\text{C}$
- Cpowder, $60\,^{\circ}\text{C}$
- Dsmall lumps, $60\,^{\circ}\text{C}$