Each of the following, if true, provides a good logical ground for hospitals to object to interpreting rank on these lists as one of the indices of the quality of hospital care EXCEPT:
(A) Rank order might indicate insignificant differences, rather than large differences, in numbers of patient deaths. -- Yes, it indicates a possibility why death rate is not referable
(B) Hospitals that keep patients longer are likely to have higher death rates than those that discharge patients earlier but do not record deaths of patients at home after discharge. --Yes it indicates death rate is unfair to certain type of hospitals
(C) Patients who are very old on admission to a hospital are less likely than younger patients to survive the same types of illnesses or surgical procedures. --Could be, since the death rate is adjusted based on age differences.
(D) Some hospitals serve a larger proportion of low-income patients, who tend to be more seriously ill when admitted to a hospital. --Yes it indicates death rate is unfair to certain type of hospitals
(E) For-profit hospitals sometimes do not provide intensive-care units and other expensive services for very sick patients but refer or transfer such patients to other hospitals. --Yes it indicates death rate is unfair to certain type of hospitals
So choose C.