50. Which is the most common anomalous variant of branching of the Aortic arch?

A) Left common carotid artery shares brachiocephalic trunk with the Right subclavian and common carotid.
B) Independent origin of all vessels.
C) Right subclavian artery with origin at the distal aortic arch.
D) Symmetrical right and left brachiocephalic trunk.
E) Right common carotid originating from the aortic arch.