Considering the United Nations' Stages of Economic Development Presented in the Text

Considering the United Nations' stages of economic development presented in the text for classifying countries with respect to levels of industrialization, if a country is industrially underdeveloped, agrarian, and has subsistence society with rural populations and extremely low per capita income levels, the country is in which of the following groups?

A) PDCs (parallel-developed countries)
B) LLDCs (least-developed countries)
C) LDCs (less-developed countries)
D) NICs (newly industrialized countries)
E) RGCs (rapid-growth countries)