Intention-to-Treat analysis of a clinical trial means which of the following? (Select one). A. Subjects should not be enrolled unless they really intend to take the treatment being tested. This is usually proven during a "run-in" period where their compliance with taking the study drug is tested before the trial begins. B. Anyone randomized into one of the study groups must be included in the final analysis in the group to which they were originally randomized, regardless of whether they adhered to the protocol or not. C. Anyone randomized into one of the study groups should be included in the final analysis, only if they actually took the drug they were assigned throughout the entire study period. D. All subjects must agree to be randomized and to take the treatment of the group they were assigned to