Which of the Following Are Advantages for the Treatment of the Respiratory

Multiple Choice

Which of the following are advantages for the treatment of the respiratory tract with inhaled aerosols?
1) Doses are usually smaller.
2) Onset of drug action is rapid.
3) Delivered dose is consistent with each administration.
4) Systemic side effects are often fewer and less severe.

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