Which of the following is a feature of smoking and weight maintenance? a. smoking a cigarette increases the appetite for energy-dense foods. b. smokers on average weigh about 5 lbs more than nonsmokers. c. trying to stop smoking at the same time as trying to lose weight effectively guarantees neither effort will succeed. d. psychotherapy is effective at reducing either smoking or body weight but not both at the same time. e. people who give up smoking gain an average of 10 lbs in the first year.