A 42-year-old woman presents with a tremor most prominent when holding her arms outstretched while pouring coffee. Vital signs show HR 88/min, BP 128/76 mmHg, RR 14/min, temp 37°C. The tremor worsens with anxiety and improves after alcohol consumption. She denies taking propranolol or other medications. Neurologic examination reveals no rigidity, bradykinesia, or postural instability. Brain MRI is normal. Which of the following is the most likely diagnosis?

1. A)Tardive dyskinesia
2. B)Intention tremor from cerebellar disease
3. C)Essential tremorGABARITO
4. D)Asterixis
5. E)Parkinson disease