Peter Is a 4-Year-Old Who Is in the Office for a Well-Child

Peter is a 4-year-old who is in the office for a well-child exam. While you are taking his history, Peter's mother says he has been urinating much more often lately. The notes also state that Peter's older sister is diabetic. Which of the following questions would be important to ask next?

A) "Is Peter having trouble with toilet training?"
B) "Does Peter seem to be excessively thirsty?"
C) "Does Peter have trouble urinating?"
D) "Does Peter have pain when he urinates?"
E) "Has Peter been wetting the bed lately?"