Determine which of the following descriptions matches the enzyme-substrate (ES) complex.

• A. It is a permanent molecule formed when an enzyme comes into perfect contact with another specific enzyme.
• B. It is a temporary molecule formed when an enzyme comes into perfect contact with any substrate.
• C. It is a temporary molecule formed when an enzyme comes into perfect contact with its specific substrate.
• D. It is a permanent molecule formed when a substrate comes into perfect contact with any enzyme.

Answer: (C)