<s>[INST] The nerves of the mediastinum are as follows:

1. Phrenic nerves
2. Vagus nerve (Vn)
3. Splanchhic nerves
4. Left recurrent laryngeal nerve

Which of the following statements are **TRUE** about the mediastinal nerves?

A) Only phrenic nerves arise from the neck
B) The phrenic nerve forms the superior boundary of the superior thoracic aperture
C) The Vagus nerve (Vn) supplies the anterior diaphragm
D) All of the above
E) None of the above[/INST]