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: Pharmacology
Drug of choice in drug-induced parkinsonism is : 
Select and explain. 
A. Levodopa, B. Benzhexol, C. Amantidine, D. Carbidopa
B: Benzhexol
Answer: B: Benzhexol 
Explanation: Central anticholinergics like trihexyphenidyl (Benzhexol) are the only drugs effective in drug-induced Parkinsonism.