A Child Diagnosed with Attention-Deficit Hyperactivity Disorder Has Been on Methylphenidate

A child diagnosed with attention-deficit hyperactivity disorder has been on methylphenidate (Ritalin) for several months. The physician orders a "drug holiday." Which of the following is the most likely reason for the drug holiday?

A) to give the parents a break from having to administer the medication
B) to determine if the drug is still necessary every day or necessary at all
C) to save money because the drug is very expensive
D) to reverse the adverse side effects of this drug