A 73-year-old woman has complete loss of sensation on the left (hemianesthesia) involving the face, arm, trunk, and leg equally. She has full strength. Which artery is most likely involved? A. Left...

A 73-year-old woman has complete loss of sensation on the left (hemianesthesia) involving the face, arm, trunk, and leg equally. She has full strength. Which artery is most likely involved?

A. Left vertebral artery

B. Right PCA