11. Based on this model, it is apparent that there is a A. negative production externality positive external benefit C. consumption externality measured as MEB = = 0.1Q D. negatively sloped MEC function 12. Which of the following statements about deposit/refund systems is INCORRECT? A. Most deposit/refund systems in the United States are used for beverage containers and lead-acid batteries. B. Some nations use deposit/refund systems for automobile bodies. C. The deposit is imposed at the time of purchase like a retail disposal charge. D. To be a viable system, the refund must be exactly equal to the deposit. 13. A set of control strategies to reduce the amount and toxicity of hazardous waste at every stage of the waste stream is known as A. source reduction B. waste management C. "cradle-to-grave" management D. risk-benefit analysis 14. Official responses to a hazardous substance release aimed at restoring immediate control are referred to as A. removal actions B. remedial actions C. records of decisions D. preliminary assessments