A Healthcare Professional in an Urban Clinic Is Seeing a Patient

A healthcare professional in an urban clinic is seeing a patient who has iron deficiency anemia (IDA) . What question by the professional is most appropriate to assess for the cause of IDA?

A) "How many times a week do you have iron-rich foods?"
B) "Have you ever noticed any blood in your stool?"
C) "Do you have a history of heart valve replacement?"
D) "Have you had any recent viral infections?"