Advantages of Using Compressed O₂ Cylinders in the Home Include

Multiple Choice

Advantages of using compressed O₂ cylinders in the home include which of the following?
1) Minimal waste or loss
2) Unlimited storage time
3) Widespread availability
4) Minimal user hazards

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