The symptoms of a fractured back are（）. A.
题型：单项选择题
问题：
The symptoms of a fractured back are（）.
A.leg cramps in the muscles in one or both legs
B.pain and uncontrolled jerking of the legs and arms
C.vomiting and involuntary urination or bowel movement
D.pain at the site of the fracture and possible numbness or paralysis below the injury