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: Unknown
Regarding involvement of structures in Weber syndrome all true except: 
Select and explain. 
A. Oculomotor nerve roots, B. Cerebellar peduncles, C. Corticobulbar tracts, D. Cortispinal tract
B: Cerebellar peduncles
Answer: B: Cerebellar peduncles 
Explanation: Ref. API Textbook of Medicine. Pg. 533
 
Weber's Syndrome constitutes an ipsilateral third nerve paralysis with a contralateral hemiplegia.

It is due to a lesion in one half of the midbrain e.g. as a result of occlusion of the paramedian branches of the basilar artery.
If there is a localised lesion in the region of the red nucleus, then there is paralysis of upward gaze.