Which Halon replacement is considered the safest, breathable in concentrations up to 30%?

Which Halon replacement is considered the safest, breathable in concentrations up to 30%?

A.
Inergen

B.
FE-13

C.
FM-200

D.
Argon

Explanation:
Answer B is correct; FE-13 is a newer Halon replacement which may be breathed in concentrations up to 30%

Incorrect Answers and Explanations: A, C, and D: Answers A, C, and D are incorrect; all are Halon replacements, but Inergen, FM-200, and Argon may be breathed in concentrations of 15% or less.