How have global databases had an impact on health research? O A. Global databases allow doctors and researchers to share information so they can chart health trends and predict how illnesses will spread. B. Global databases are used within a health care facility to keep track of all patients at the facility, but they do not keep any data from other facilities, O C. Global databases allow doctors and researchers located in the United States to share information and gain a greater understanding of disease processes. D. Global databases keep a record of global illnesses, but they do not provide any socioeconomic or demographic information for the people who have those illnesses.