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 $40^{\circ}\text{C}$.