Communism failed to provide incentives for workers and citizens to work hard and be productive. While there are many benefits from equality, if pushed to an extreme it robs people of an incentive to make an effort. There was little if any reward for hard work or innovation and a lack of punishment for poor or inefficient work. The lack of incentives was a major reason for the poor performance of Eastern Europe economies.
Okay, fair warning, Math is not my best subject, but I believe the answer is A, -3/2. Hope I'm right
Organization of the Petroleum Exporting Countries
International Monetary Fund
European Free Trade Association
World Bank Group
Asia-Pacific Economic Cooperation
Consumers International
They could get more done which benefited them in the long run