49. Which of the following statements CANNOT be inferred from the passage? (A) Almost one third of American adults suffer from liver cancer. (B) People with simple fatty liver often do not know that they have health problems. (C) Obese people with the variant of the PNPLA3 gene are more likely to have fatty liver disease. (D) People with NAFLD are unlikely to be high-risk populations for liver complications. (E) More and more American adults are at high risk of contracting heart disease.