Which of the Following Would You Consider Recommending for a Home

Which of the following would you consider recommending for a home care patient receiving nasal CPAP who complains of severe nasal dryness?
1) Room vaporizer
2) Heat and moisture exchanger (HME)
3) In-line humidifier
4) Saline nasal spray

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