Regarding the phrenic nerves, all of the following are true, EXCEPT:

• A. each nerve provides motor supply to own half of diaphragm, left phrenic also supply half of right crus
• B. the phrenic nerve is supplied by its own pericardiophrenic artery which accompanies it
• C. the right phrenic nerve is in contact with venous structures throughout its course
• D. the left phrenic nerve passes to the inferior surface of diaphragm through muscle
• E. arising mainly from C4 in the neck, the nerve passes behind the anterior scalene