In the Ricardian model, if wages in Australia are higher than in Japan, and Australia specializes in producing food while Japan specializes in producing cars, then it must be that: A. the productivity of workers in the car industry in Australia is lower than the productivity of workers in the car industry in Japan B. the productivity of workers in the food industry in Australia is higher than the productivity of workers in the food industry in Japan C. the productivity of workers in the car industry in Australia is lower than the productivity of workers in the food industry in Australia O D. the productivity of workers in the food industry in Australia is higher than the productivity of workers in the car industry in Japan