Which of the Following Might Hinder Attempts at Nutritional Repletion

Multiple Choice

Which of the following might hinder attempts at nutritional repletion in patients with respiratory disease?
1) The use of bronchodilators
2) Simple oxygen therapy
3) Intubation
4) Deep breathing and cough exercises

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