Which of the Following Are True About ASSS Standards

Multiple Choice

Which of the following are true about ASSS standards?
1) They provide specifications for more than 60 gases and mixtures.
2) They apply only to cylinders sizes F through H/K.
3) They apply to high-pressure connections.
4) They provide a separate connector for all gases.

A) 1 and 3 only
B) 1, 2, and 3 only
C) 3 and 4 only
D) 2, 3, and 4 only