A cellular enzyme is effectively deactivated by an increase in temperature of 10°C. Which is the most likely mechanism of deactivation?

A. The enzyme, which is a carbohydrate, breaks apart into glucose molecules.
B. The enzyme, which is a protein, breaks apart into individual amino acids.
C. The enzyme changes shape and is no longer able to bind the substrate.
D. The enzyme reacts with the substrate to produce side products.