This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hydrocephalus, Subject name: Pediatrics
[{'content': 'All of the following are true about Dandy Walker malformation EXCEPT? \nSelect and explain. \nA. It is due to the failure of opening of foramen of Magendie, B. 4th ventricle forms a cyst in the posterior fossa, C. Cerebellum remains normal, D. Delayed development and spasticity may be seen.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Dandy Walker malformation: It is d/t failure of opening of foramen of Magendie Results in balooning of posterior wall of 4th ventricle to form a cyst in posterior fossa. Associated with other cerebral & cerebellar anomalies . - Clinical features : Delayed development, spasticity and cerebellar ataxia.', 'role': 'assistant'}]