This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Extensive involvement of deep white matter with hyperdense thalamic lesion on non-contrast CT scan of the brain is seen in: 
Select and explain. 
A. Krahhe's disease, B. Alexander disease, C. Metrachromatic Leukodystrophy, D. Cannavan's disease
A: Krahhe's disease
Answer: A: Krahhe's disease 
Explanation: Ans. Krahhe's disease