The correct answer is NEITHER.
Here is an example of a false label claim to be “FR” or flame resistant. This material DOES NOT meet or exceed ASTM D6413 because you can’t meet or exceed a test method. It has no pass/fail criteria to meet or exceed. It is likely tested by this method and has a short char length but that doesn’t make it FR for any exposure other than a vertical flame test. This is common with import companies which have fallen behind on the research showing that in most flame exposures suits like this will melt into the skin of a worker especially on the face or arms. Most of these companies are ignorant of the standards and just put what someone told them years ago. Some are deceptive and want to give the “market what it wants” as I was told by one company. The deceptive ones call melting materials FR even though they do not meet any standard for flame resistant clothing published in the past 10 years or more. Many manufacturers improperly use NFPA 701 which is for textiles in curtains, wall coverings and etc and according to an e-mail I have from NFPA is NOT designed for use on clothing. I’ll start exposing the offenders. If your company shows up on the blog. Just stop labeling like this and we’ll remove it when you pledge to do so.