A mother brings her 3-year-old to the emergency room for a compliant of stomach pain. She insists on ...

A mother brings her 3-year-old to the emergency room for a compliant of stomach pain. She insists on having him admitted to find out the cause of the pain.
 
  Upon reviewing the child's medical history, it is discovered that the child has been in the emergency room three other times in the past 6 months for the same complaint. What other information would alert the nurse to investigate the situation further?
  A) The child has a 1-year-old sister.
  B) The mother is a single parent.
  C) The mother is in nursing school.
  D) The child verbalizes abdominal pain when the mother is present.