content area top Part 1 In Japan, the Toyota group includes Toyota Motors, Aichi Steel, Idemitsu Kosan petroleum, Toyoda Gosei (component parts), Toyota Financial Services, plus many others. This is the Toyota keiretsu based on which of the following? Question content area bottom Part 1 A. The Red Ocean model B. The Blue Ocean model C. Porter's Five Forces model D. The Flagship model E. Japan's national diamond