A new drug is designed to inhibit an enzyme involved in cancer cell proliferation. What is a potential consequence of this drug on the enzyme's activity?

• A. The enzyme's activity will increase, leading to faster cancer cell proliferation.
• B. The enzyme will become more specific to its substrate.
• C. The enzyme will be converted into a structural protein.
• D. The enzyme's activity will decrease, potentially slowing cancer cell proliferation.

Answer: (D)