Klumpke's paralysis from a brachial plexus injury involves which of the following nerve cords?
Klumpke's paralysis is a form of paralysis involving the muscles of the forearm and hand, resulting from a brachial plexus injury in which the eighth cervical (C8) and first thoracic (T1) nerves are injured either before or after they have joined to form the lower trunk.
C5, C6
C6, C7
C7, T1
C8, T1