A Caregiver Has Just Learned That His Child Has Diabetes

A caregiver has just learned that his child has diabetes insipidus and asks the nurse: "Just what is diabetes insipidus?" Which of the following is the nurse's best answer?

A) "This disease involves a shortage of a hormone called antidiuretic hormone (ADH) that normally concentrates urine, and a shortage results in excretion of large amounts of dilute urine."
B) "It is a form of diabetes mellitus, and although it shares some features, it is somewhat different from type 1 and type 2."
C) "It is the only type of diabetes that does not involve the pancreas and insulin deficiency."
D) "There is a malfunction of the thirst mechanism in the brain, and the child drinks copious amounts of water without ever being satisfied and is in danger of water intoxication."