Which Teaching Pointer Is Appropriate for Inclusion in the Teaching

Which teaching pointer is appropriate for inclusion in the teaching associated with learning to use a budesonide (Rhinocort) nasal preparation?

A) "Don't blow your nose right after using this drug."
B) "Use this preparation before your nasal decongestant."
C) "Avoid the use of ultrasonic humidifiers with this preparation."
D) "You should see improvement in your symptoms in about a week."