A Mother Calls the Nurse Practitioner to Say, "I Don't

A mother calls the nurse practitioner to say, "I don't know what is wrong with my baby. He cried all night and kept pulling at his ear." How would the nurse respond?

A) "Oh, he probably was just hungry and wet. Did you feed him?"
B) "Babies at that age cry at night. Think nothing of it."
C) "That means his ear hurt. Bring him in to be checked."
D) "That probably means he had a tummy ache. How is he now?"