The graph presents the outcomes of adding excess calcium carbonate to hydrochloric acid at $50^{\circ}\text{C}$ and at $30^{\circ}\text{C}$. The only factor altered is temperature. Which row shows how the reacting particles at $30^{\circ}\text{C}$ compare with those at $50^{\circ}\text{C}$?
- Ahigher frequency of collisions, higher average kinetic energy
- Bhigher frequency of collisions, lower average kinetic energy
- Clower frequency of collisions, higher average kinetic energy
- Dlower frequency of collisions, lower average kinetic energy