A controversial study that suggested a link between the measles-mumps-rubella (MMR) vaccine and autism in children had to be retracted due to reports of significant bias in the research process. What are some possible examples of bias that may have impacted the validity and reliability of this study's results? Select all that apply. Select 2 correct answer(s) Question 6 options: a. The process of selecting participants to participate in the study was misrepresented. b. The sample size used for the study was too large. c. Survey questions used for the study were phrased in a way that influences how participants answer. d. The findings accurately reflected the data. e. The sample size used for the study was appropriate