According to Coast Guard Regulations (46 CFR 30), a flammable liquid with a Reid vapor pressure of 8-1/2 psi or less, and a flash point of 80°F or below, is a grade __________.

Correct Answer: Option A — C

46 CFR 30 classifies flammable liquids with a Reid vapor pressure of 8.5 psi or less and a flash point of 80°F or below as Grade C flammable liquids.