R Hospital topped the list in the "My Most Satisfied Hospital" survey held in C for 5 consecutive years. The person in charge of the hospital said that this was because the hospital provided better guidance services than other hospitals. Which of the following is true and best supports the opinion of the person in charge of the hospital? ['Major hospitals in A. C have invested a lot of energy in the guidance service in an effort to improve the quality of guidance service.', 'C City\'s "My Most Satisfied Hospital" survey has been launched for 20 years, and the highest-ranked are public hospitals.', 'There are more than 200 hospitals in C. C. Not all hospitals participated in the survey.', 'It is comparable to the medical level of R hospital, but the ranking of poor guidance services is not as good as that of R hospital.']