The graph illustrates how temperature affects an enzyme-controlled reaction. Which statement describes the effect of temperature on this reaction?
- AAs the temperature increases to $25^\circ\text{C}$ the reaction speeds up.
- BBetween $10^\circ\text{C}$ and $20^\circ\text{C}$ the enzyme stops working.
- CBetween $35^\circ\text{C}$ and $45^\circ\text{C}$ the enzyme stops working.
- DThe optimum temperature for this reaction is $40^\circ\text{C}$.