What is the difference between a zero-order decay and a pseudo-zero-order scenario?

What is the difference between a zero-order decay and a pseudo-zero-order scenario?

• A. Zero-order decay: rate depends on concentrations; pseudo-zero-order: rate independent
• B. Zero-order decay: rate independent of concentrations; pseudo-zero-order occurs when a reactant is in large excess causing the observed rate to be approximately constant with respect to that reactant's finite variation
• C. Zero-order decay: rate proportional to concentration squared; pseudo-zero-order: rate linear in concentration
• D. Zero-order decay: occurs only for single-step reactions; pseudo-zero-order: occurs for multi-step

Answer: (B)