Why is it illegal to operate a torch with an acetylene pressure greater than 15 psi?

Question

A) Acetylene becomes unstable and can explode above 15 psi.
B) The torch cannot be manufactured to contain pressures exceeding 15 psi.
C) Hoses cannot be built to handle pressures exceeding 15 psi.
D) Acetylene is a rare and precious resource that must be used sparingly to ensure a supply in the future.

Answer 1

A