A 61-Year-Old Man Was Seen in the Emergency Department Complaining

A 61-year-old man was seen in the emergency department complaining of a feeling of pressure within his chest. On questioning, he said that he had several attacks before and that they had always occurred when he was climbing stairs or digging in the garden. He found that the discomfort disappeared with rest after about 5 minutes. The reason he came to the emergency department was that the chest discomfort had occurred with much less exertion
-The following comments concerning this case are correct except which?

A) The diagnosis is a classic case of angina pectoris.
B) The sudden change in history, that is, pain caused by less exertion, should cause the physician concern that the patient now has unstable angina or an actual myocardial infarction.
C) The afferent pain fibers from the heart ascend to the central nervous system through the cardiac branches of the sympathetic trunk to enter the spinal cord.
D) The afferent pain fibers enter the spinal cord via the posterior roots of the tenth to the twelfth thoracic nerves.
E) Pain is referred to dermatomes supplied by the upper four intercostal nerves and the intercostal brachial nerve.