In Selecting the Appropriate Aerosol Drug Delivery Device for a Given

In selecting the appropriate aerosol drug delivery device for a given patient, what must you consider?
1) Available drug formulation(s)
2) Desired site of deposition
3) Patient's characteristics
4) Patient's preference

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