This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroradiology, Subject name: Radiology
A 60 years old male patient came with complaint of spasticity in bilateral lower limbs. MRI was performed and shown below. 
Select and explain. 
A. Multiple systemic atrophy- predominant parkinsonism, B. Progressive supranuclear palsy, C. Multiple systemic atrophy- predominant cerebellar ataxia, D. Lewy body dementia
C: Multiple systemic atrophy- predominant cerebellar ataxia
Answer: C: Multiple systemic atrophy- predominant cerebellar ataxia 
Explanation: HOT CROSS BUN SIGN- cross shaped hyperintensity in the centre of pons. It is a classic feature of Multisystem atrophy type - C. Multisystem atrophy type - c has involvement of pontocerebellar pathway