A Gardener Needs a Decongestant Because of Seasonal Allergy Problems

A gardener needs a decongestant because of seasonal allergy problems and asks the nurse whether he should take an oral form or a nasal spray. The nurse's answer considers that one benefit of orally administered decongestants is

A) immediate onset.
B) a more potent effect.
C) lack of rebound congestion.
D) shorter duration.