Which of the following statements presents the most serious obstacle to increasing the global use of biofuels ? A. Biofuels pollute the atmosphere more than gasoline. B. Biofuel is significantly more expensive than gasoline. C. Biofuel production has resulted in increased food prices. D. Biofuels cannot be used in automobiles. Please select the best answer from the choices provided Ο Α oc OD IM ME O