Advantages of Closed Suctioning Include Which of the Following

Multiple Choice

Advantages of closed suctioning include which of the following?
1) No need to prehyperoxygenate or posthyperoxygenate.
2) No need to prehyperventilate or posthyperventilate.
3) Decreased risk of infection for caregiver.
4) No loss of PEEP during the procedure.

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