With respect to the superior mediastinum, which is FALSE?

• A. the trachea is separated from the apex of the left lung by the left common carotid and left subclavian
• B. the SUC and brachiocephalic veins lie anterior to the brachiocephalic trunk
• C. the vagus nerve (right) lies medial to the right common carotid artery
• D. the trachea bifurcates at the lower limit of the superior mediastinum
• E. the thymus lies behind the manubrium