A combustible liquid with a flash point of 90°F would be grade __________.
Official USCG Answer & Rule Citation
Correct Answer: Option C — D
Title 46 CFR 30.10-15 defines combustible liquids by grades. Grade D combustible liquids are those having a flash point above 80°F (26.7°C) and below 150°F (65.6°C). A flash point of 90°F falls directly within this regulatory range, classifying the cargo as Grade D.
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