A Patient with a History of Parkinson's Disease Complains of a Recent

A patient with a history of Parkinson's disease complains of a recent increase in difficulty with balance,especially immediately upon standing up,during stair climbing,and when getting up from the bed to go to the bathroom at night.Which of the following is the BEST tool to test this patient's balance?

A) Berg Balance Scale
B) Functional Reach Test
C) Performance-Oriented Mobility Assessment
D) Timed Get-up-and-Go Test