Conditions in Which Patient Need for Home Mechanical Ventilation Is

Multiple Choice

Conditions in which patient need for home mechanical ventilation is generally limited to daytime or nocturnal support include which of the following?
1) Kyphoscoliosis
2) High spinal cord injuries
3) Amyotrophic lateral sclerosis
4) Myasthenia gravis

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