A Patient Who Is Being Treated with Topical Mafenide Acetate

A patient who is being treated with topical mafenide acetate for third-degree burns is demonstrating facial and neck edema. What does the nurse realize is the most likely reason?

A) The patient is developing hypersensitivity to the medication.
B) The patient is reacting positively to the medication.
C) The patient needs an increase in dosage of the medication.
D) The patient is not responding to the medication.