The nurse has taught the parents of a school-aged child with a newly placed ventriculoperitoneal (VP) shunt to monitor for early signs of shunt malfunction. The nurse determines the parents understand the instructions if they understand they should notify the provider if the child develops which early manifestation?

A. Lethargy is an early sign of increased intracranial pressure (ICP) due to possible shunt malfunction and requires immediate medical attention. B. Seizure activity can be a late sign of shunt malfunction and is also concerning but lethargy typically appears earlier. C. Rapid weight gain is less directly related to shunt malfunction and more associated with conditions like hypothyroidism or edema. D. Disinterest in school could suggest general malaise but is not a specific or early sign of shunt malfunction.