For Maintenance Administration of Bronchodilators to an Adult Patient with Adequate

For maintenance administration of bronchodilators to an adult patient with adequate inspiratory flow, which of the following aerosol drug delivery devices would you recommend?
1) Pressurized metered dose inhaler (pMDI)
2) Small-volume jet nebulizer
3) Dry powder inhaler
4) pMDI and holding chamber

A) 1 or 2 only
B) 2 or 3 only
C) 2 or 4 only
D) 3 or 4 only