Which statement accurately describes the differences between bioaccumulation factor (BAF) and bioconcentration factor (BCF) and their role in ecological risk assessments?

• A. BAF measures accumulation from water only; BCF measures accumulation from all exposure routes.
• B. BAF measures accumulation from all exposure routes; BCF measures accumulation from water only; both inform internal dose and trophic transfer in ecological risk assessments.
• C. BAF and BCF measure identical processes.
• D. BAF measures external dose; BCF measures ingestion only.

Answer: (B)