The Client Is Being Treated with One of the Sulfonamides

The client is being treated with one of the sulfonamides. She complains to the nurse of experiencing a sore throat. What is the highest priority action on the part of the nurse?

A) Administer the medication; this is an expected side effect of the medication.
B) Call the physician; this is symptomatic of development of a superinfection.
C) Call the physician; this is symptomatic of a life-threatening anemia.
D) Hold the medication and call the pharmacist for clarification.