This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S., Subject name: Medicine
[{'content': 'First Symptoms of parkinsons disease is - \nSelect and explain. \nA. Postural instability, B. Rigidity, C. Tremors, D. Bradykinesia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., Tremors o Earliest symptom of parkinsonism is "tremor"Parkinsonism is Characteristically Associated with Triad of||||RigidityHypokinesiaTremors|Slowness in initiating and repeating voluntary movements despite normal muscular strengthResting tremors (earliestsvmptoms)o 4-6 hzo Diminish with movement and attentiono Fingers most commonly affectedo Present at restPostural Tremorso 8-10 hzo Persists on movement||LimbsTrunkLead pipe (More in lower limbs/trunk)Stooped/flexed Cog wheel rigidity (more in upper limbs)| | | Gait/Postural reflexes (disturbed)', 'role': 'assistant'}]