In$2020,$ the United Nations ranked Norway first on the Human Development Indexlong dasha ranking of the$$ "quality of$$ life" in many countries. Yet Norway was not ranked first in terms of real per capita GDP$.$ Explain how the two rankings can be different. A$.$ The Human Development Index uses nominal GDP values but not real GDP$.$ B$.$ The Human Development Index formula$$ doesn't take into account real per capita GDP factor. C$.$ The Human Development Index formula includes not only per capita GDP but also$$ non$-$economic factors. D$.$ This could be explained by the different ways of calculating national incomedashexpenditure and income approaches.