Which of the the following is not correct ?

A. Right CCA is a branch of brachiocephalic artery

B. Left CCA is a branch of arch of aorta

C. The CCA is divided into external and internal carotid arteries at the level of upper border of thyroid cartilage

D. Carotid sinus acts as a chemoreceptorCorrect Answer

Correct Option: D. Carotid sinus acts as a chemoreceptor

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