According to Coast Guard Regulations (46 CFR), a 10 pound dry chemical extinguisher is equivalent to a __________.

Correct Answer: Option C — 15 pound CO2 fire extinguisher

46 CFR establishes equivalency ratings for portable fire extinguishers based on their extinguishing capacity. A 10-pound dry chemical extinguisher is recognized as having an equivalent fire-fighting capability to a 15-pound carbon dioxide (CO2) extinguisher, allowing for standardized safety compliance across different types of installed equipment.