The Patient Being Treated for GERD Says, "I Seem to Have

The patient being treated for GERD says, "I seem to have so many colds and coughs now." How should the nurse respond to this statement?

A) "Be sure to get your flu shot."
B) "The medicine you are on for GERD changes your gastric pH."
C) "You need to avoid crowds until your GERD is under control."
D) "You may be more susceptible to respiratory infection while taking this medication."
E) "You may be having an allergic reaction to your medicine."