[CR] 请问一题 CR
Often patients with ankle fractures that are stable, and thus do not require
surgery, are given follow-up x-rays because their orthopedists are concerned
about possibly having misjudged the stability of the fracture. When a number
of follow-up x-rays were reviewed, however, all the fractures that had
initially been judged stable were found to have healed correctly. Therefore,
it is a waste of money to order follow-up x-rays of ankle fracture initially
judged stable.
Which of the following, if true, most strengthens the argument?
A. Doctors who are general practitioners rather than orthopedists are less
likely than orthopedists to judge the stability of an ankle fracture
correctly.
B. Many ankle injuries for which an initial x-ray is ordered are revealed by
the x-ray not to involve any fracture of the ankle.
C. X-rays of patients of many different orthopedists working in several
hospitals were reviewed.
D. The healing of ankle fractures that have been surgically repaired is
always checked by means of a follow-up x-ray.
E. Orthopedists routinely order follow-up x-rays for fractures of bone other
than ankle bones.
(OA防雷)
答案 (C)，但我怎么看好像跟题目都没关联性啊，有人可以解释吗?