In the superior mediastinum:

• A. the azygous vein arches under the right main bronchus
• B. the right brachiocephalic vein receives the thoracic duct
• C. the aortic arch is crossed on the left side by the phrenic and vagus nerves
• D. the superficial cardiac plexus contains right and left vagal and sympathetic fibres
• E. the superior vena cava receives the azygous vein at the lower border of the right 1st costal cartilage