Several studies showed that after eating a very large meal, subjects had increased risk of heart attack. A diet food manufacturer financed this research. Identify What wrong. Choose the correct answer below. OA. It is not possible to take accurate measurements. OB. The data used in the studies is not reliable because it was not measured by the administrator. OC. It is questionable that the sponsor is a diet food manufacturer because this sponsor can be greatly affected by the conclusion. OD. Since the research is composed of voluntary response samples, there may be key data points missing.