This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parkinsonism, Subject name: Medicine
Which of the following is not seen in Parkinsonism? 
Select and explain. 
A. Preserved postural reflexes, B. Hypokinesia, C. Rigidity, D. Static tremors
A: Preserved postural reflexes
Answer: A: Preserved postural reflexes 
Explanation: Ans: A (Preserved postural reflexes) Ref: Harrison's Principles of Internal Medicine. 18th edition. 2012. Chapter 372. (Table 372-3)Explanation:Clinical Features of Parkinson's DiseaseCardinalFeaturesOther Motor FeaturesNonmotorFeaturesBradykinesiaRest tremorRigidityGait disturbance/posturalinstabilityMicrographiaMasked facies (hypomimia equalizeReduced eye blinkSoft voice (hypophonia)DysphagiaFreezingAnosmiaSensory disturbances (e.g., pain)Mood disorders (e.g.t depression)SleepdisturbancesAutonomicdisturbancesOrthostatichypotensionGastrointestinaldisturbances GemtourinaldisturbancesSexual dysfunctionCognitiveimpairment/Dementia