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: Medicine
The first line of drug to be preferred for the treatment of akathesia is - 
Select and explain. 
A. Benzhexol, B. Trihexy phenedyl hydrochloride, C. Promethazine, D. Propranolol
D: Propranolol
Answer: D: Propranolol 
Explanation: None