Which statement correctly differentiates zero-order from first-order drug elimination?

• A. Zero-order eliminates a constant proportion per time, while first-order eliminates a constant amount.
• B. Zero-order eliminates a constant amount per time, while first-order eliminates a constant proportion.
• C. Zero-order elimination occurs only for alcohol, first-order for all other drugs.
• D. Zero-order elimination is saturable; first-order is non-saturable.

Answer: (B)