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
Cogwheel type of rigidity is seen in one of the following: 
Select and explain. 
A. Parkinsonism, B. Multiple scelerosis, C. Motor neuron disease, D. Tabesdorsalis
A: Parkinsonism
Answer: A: Parkinsonism 
Explanation: None