What is the origin and distribution of the radial nerve in the upper limb? The radial nerve originates from the posterior fascicle of the brachial...

What is the origin and distribution of the radial nerve in the upper limb?

The radial nerve originates from the posterior fascicle of the brachial plexus, which receives contributions from the C5 to T1 spinal nerves.
The radial nerve follows the posterior surface of the axillary artery and reaches the dorsal surface of the humerus, where it occupies the radial nerve groove.
In the arm, the radial nerve emits muscular branches to the extensor muscles and three cutaneous branches to the lateral inferior arm, posterior arm, and posterior forearm.
The superficial branch of the radial nerve innervates the lateral half of the dorsal hand and distributes to the dorsal surface of the thumb and the proximal phalanges of the index and middle fingers.
The deep branch of the radial nerve innervates the supinator muscle, the extensor muscles of the wrist, fingers, and thumb, and the abductor pollicis longus muscle.
a) Only statements I, II, and III are correct.
b) Only statements II, III, and IV are correct.
c) Only statements III, IV, and V are correct.
d) All statements are correct.