A doctor advises an elderly woman who has occluded arteries in her right leg to cut the sympathetic nerves that serve the limb. This will relieve her of the pain that she is suffering because:

• A. It will open up the blood flow to the arteries.
• B. It will reduce the vasoconstrictor tone of the sympathetic nerves.
• C. It will reduce the vasodilation tone of the sympathetic nerves.
• D. Both a and b.