A 65 yr old male develops the acute onset of weakness of the right face, arm and leg. There is associated numbness of face, arm, and leg. He has an expressive aphasia. Eyes are deviated to the left and he has a right homonymous hemianopia. a) What vascular territory is involved? b) Name the vessel this artery branches off from. c) Which artery or arteries supply the body and head of the caudate, upper part of the anterior limb, genu, and anterior part of the posterior limb of the internal capsule, putamen, and pallidum? d) What are the possible etiologies of stroke in this patient? A 75 yr old