Which Explanation Regarding Cardiac Catheterization Is Appropriate for a Preschool

Which explanation regarding cardiac catheterization is appropriate for a preschool child?

A) Postural drainage will be performed every 4 to 6 hours after the test.
B) It is necessary to be completely "asleep" during the test.
C) The test is short, usually taking less than 1 hour.
D) When the procedure is done, you will have to keep your leg straight for at least 4 hours.