With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: There is little chance of heavy-metal poisoning occurring due to the ingestion of fish-oil supplements, because heavy metals such as mercury, lead, nickel, arsenic, and cadmium do not accumulate in the oil of the fish, and instead selectively bind to proteins in the animal's flesh.
text_B: Would a warning label that reminds users to take fish oil supplements only in their recommended doses be a sufficient precaution (or perhaps even an unnecessary one) given the level of risk?
YES.