This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parkinsonism and other movement disorders, Subject name: Medicine
A 65-year-old has suffered from essential tremor for many years. Her symptoms are exacerbated by stress and fatigue and some evenings she is unable to cook or make herself a cup of tea because of it. Which of the following is the most appropriate first-line treatment? 
Select and explain. 
A. Pramipexole, B. Topiramate, C. Propranolol, D. Diazepam
C: Propranolol
Answer: C: Propranolol 
Explanation: Generally essential tremor requires no treatment but if the quality of life is affected then Propranolol should be given.