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
Which of the following drugs can be used as a transcranial patch for treatment of parkinsonism? 
Select and explain. 
A. Levodepa, B. Rotigotine, C. Apomorphine, D. Aprantine
B: Rotigotine
Answer: B: Rotigotine 
Explanation: Ans 'b' i.e. Rotigotine o Rotigotine is intended to be delivered through transdermal patches, so as to ensure a slow and constant dosage in a 24-hour period.