All of the following statements concerning green chemistry are correct except: a) substances used in a chemical process should be chosen to minimize the potential for chemical accidents. b) raw materials should be renewable whenever technically and economically practical. c) chemical syntheses should be done at high enough temperatures to ensure harmful bacteria are destroyed. d) synthetic methods should be designed to use and generate substances that possess little or no toxicity to human health or the environment. e) it is better to prevent waste than to treat or clean up waste after it is formed.