A 35-Year-Old Woman Had Difficulty Breathing and Sleeping at Night

A 35-year-old woman had difficulty breathing and sleeping at night. She says she falls asleep only to wake up with a choking sensation. She finds that she has to sleep propped up in bed on pillows with her neck flexed to the right.
-The following statements concerning this case are correct except which?

A) Veins in the skin at the root of the neck are congested.
B) The U-shaped cartilaginous rings in the wall of the trachea prevent it from being kinked or compressed.
C) The left lobe of the thyroid gland is larger than the right lobe.
D) On falling asleep, the patient tends to flex her neck laterally over the enlarged left thyroid lobe.
E) The enlarged thyroid gland extends down the neck into the superior mediastinum.
F) The brachiocephalic veins in the superior mediastinum were partially obstructed by the enlarged thyroid gland.