A 51-year-old woman presents with a 2-year history of recurrent involuntary neck turning and painful sustained muscle contractions that worsen with stress. Vital signs show BP 128/82 mmHg, HR 88 bpm, RR 16, temperature 37°C, and SpO2 98% on room air. Neurologic examination reveals normal strength, reflexes, and cognition with no pyramidal signs. MRI brain shows no structural abnormalities. She takes no medications. Which of the following is the most likely diagnosis?

1. A)Resting tremor
2. B)Chorea
3. C)Myoclonus
4. D)Akathisia
5. E)DystoniaGABARITO