(Lovins, Lovins, and Hawken, "A roadmap to natural capitalism"). According to this article, one of the main reasons why so many companies do not yet pursue sustainable, nature-emulating business practices is that ___________. Select one: a. reward systems oftentimes create perverse incentives b. purchasing decisions are usually based on the lifetime costs of products rather than making these decisions based on the initial costs only c. working against nature simply often is more productive than working with it d. some leading business consulting firms have not yet shifted their consulting services towards these practices e. reward systems typically only reward sustained profitability