Which of the following best describes hemiplegia and hemiparesis following a cerebral infarction?
A) Complete paralysis and weakness of the same side of the body due to spinal cord injury
B) Partial and complete loss of motor function on one side of the body as a result of a stroke
C) Sensory loss and numbness in both arms and legs caused by a viral infection
D) Involuntary muscle spasms and seizures due to traumatic brain injury