The graph illustrates how temperature affects the activity of four different enzymes. Which conclusion drawn from the data in the graph is correct?
- AEnzyme P and enzyme Q are both active at 25$^\circ\text{C}$.
- BEnzyme R and enzyme S are both active at 75$^\circ\text{C}$.
- CEnzyme P has an optimum temperature of 0$^\circ\text{C}$.
- DEnzyme S has an optimum temperature above 100$^\circ\text{C}$.