Disadvantages of Using Compressed O₂ Cylinders in the Home Include

Multiple Choice

Disadvantages of using compressed O₂ cylinders in the home include which of the following?
1) High-pressure hazards
2) Limited volume of O₂
3) Gas waste when not used
4) Need for frequent deliveries

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