A 72-year-old hypertensive man has been having brief spells that he describes as tingling on the right side of his face. They have generally lasted only minutes at a time. This morning he awoke to...

A 72-year-old hypertensive man has been having brief spells that he describes as tingling on the right side of his face. They have generally lasted only minutes at a time. This morning he awoke to find a similar sensation involving his left arm and leg. The symptoms have persisted throughout the day and he is getting worried. Where is his lesion?

A. Dorsal pontine tegmentum on the left

B. Ventral pontine tegmentum on the left

C. Dorsal pontine tegmentum on the right

D. Ventral pontine tegmentum on the right

E. Trigeminal ganglion on the right