A 78-Year-Old Man Was Brought to the Office by His

A 78-year-old man was brought to the office by his wife due to abnormal involuntary movements of the left arm. While he was walking with his wife, he suddenly through his phone across the street. The patient is known to have hypertension and diabetes mellitus. On examination, he is moving his left arm with large amplitude movements. This patient has a most likely injury in which of the following sites?

A) Caudate nucleus
B) Internal capsule
C) Lentiform nucleus
D) Substantia nigra
E) Subthalamic nucleus
F) Ventral posterior thalamus