For the great neck vessels, which is TRUE?

• A. the carotid sheath contains the ansor cervicalis, vagus and recurrent laryngeal nerves
• B. the external carotid artery has three branches
• C. the internal carotid artery has six branches
• D. the internal jugular vein lies lateral to the carotid artery throughout its course
• E. the carotid sinus lies at the commencement of the common carotid artery