You are examining a patient with a diagnosis of cervical radiculopathy. The patient reports feeling symptoms in the right posterior scapular region and experiencing tingling in the second, third, and fourth digits of the right upper extremity, which extend down the posterior side to the ends of the fingers. Further examination reveals a noticeable weakness in the right triceps. Which nerve root is most likely involved?
1. Fourth cervical root
2. Fifth cervical root
3. Sixth cervical root
4. Seventh cervical root
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