According to 46 CFR part 95, which of the listed fire extinguishers would be considered hand portable/semi-portable and capable of combating a class "B" fire?

Correct Answer: Option D — All of the above

46 CFR Part 95 classifies portable and semi-portable extinguishers based on their extinguishing agent and capacity. Foam, dry chemical, and carbon dioxide are all approved agents for Class B fires involving flammable liquids. The specified weights and volumes meet the regulatory criteria for portable fire-fighting equipment on inspected vessels.