The critical factors to be considered in building factories in developing countries does NOT include______.

A．Highly sophisticated processes are accomplished in developed countries while simple work is done in less developed countries.
B．Developing countries put stress on agriculture while developed countries, on industry.
C．Talents are trained in developed countries and then provide services in developing countries.
D．Developed countries manufacture industrial products while less developed countries provide raw materials.

A．the practitioners would be licensed '
B．the practitioners would receive regular medical examination
C．the practitioners already diseased would be made known
D．those already diseased could choose each other as partner