When Assessing an Elderly Client Who Reports a Tremor,which Assessment

When assessing an elderly client who reports a tremor,which assessment findings would be most reliable in identifying Parkinson's disease?

A) Any presence of tremor
B) Symptoms of slowed movement,unstable angina,and tremor
C) Resting tremor,slow unsteady gait,and cogwheel resistance
D) Cogwheel rigidity,bradykinesia,and amnesia