economics question

Which of the following is a possible explanation for sticky prices? O A. Lack of union power to lower prices on products allows firms to maintain higher priced goods. OB. It is illegal for firms to lower prices without the consent of the courts O C. All firms act as a cartel and maintain a constant non-competitive price. O D. Labor contracts cause wages to be fixed over the contract period. a. The Keynesian model argues that prices are sticky. One reaton supporting this argument is that O A. nominal wages are flexible but real wages are not OB nominal wages are inflexible downwards OC government price ceilings. OD. all unemployment is voluntary b. Since the nominal wage is deemed inflexible, a decrease in aggregate demand causes times to A. simply have all workers produce at a slower rate without any unemployment OB. lower the real wage. OC. reduce their workforce D. Increase wages to increase income so AD increases. c. Thus, according to the Keynesian model full employment is a