Which of these is a statement of opinion? A. The teens who participated in the study came from nine countries, including Greece, Germany, Belgium, France, Hungary, Italy, Sweden, Austria, and Spain. B. In recent years, scientists discovered that the FTO gene is linked with obesity because its variant form increases vulnerability to weight gain. C. It is wise for all adults to engage in daily vigorous exercise whether or not they carry the gene variant associated with obesity. D. The data from the new study provides evidence that physical activity can counterbalance the effects of obesity genes.