A dilute starch solution becomes blue after a very dilute iodine solution is introduced. As amylase breaks down the starch, this colour fades away. The graph shows how the blue colour disappears at different temperatures. Which statement explains the pattern of the curve?
- AEnzyme activity rises as the temperature rises.
- BEnzymes have an optimum temperature range for activity.
- CEnzymes are inactive below $30^ $.
- DEnzymes do not work above $30^ $.