Which statement correctly describes the formation of the External Jugular vein?

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It is located beneath the sternocleidomastoid muscle.It empties into the Internal Jugular vein.It originates from the merging of the posterior auricular vein and the posterior branch of the retromandibular vein.It passes through the pretracheal layer of the cervical fascia before ending.

Explanation

Option A is incorrect because the External Jugular vein lies superficial to the sternocleidomastoid muscle. Option B is wrong since it drains into the subclavian vein, not the Internal Jugular vein. Option C is correct; the External Jugular vein is formed by the union of the posterior auricular vein and the posterior division of the retromandibular vein. Option D is false because it pierces the investing layer of cervical fascia, not the pretracheal layer.