The correct options are
A Members of the UN get preferential treatment with respect to their size, geography, economy, and population.
D The UN is an international organisation with 198 UN Member States.
All the nations are treated equally irrespective of their size, geography, economy and population. Both, Germany, a developed country and Sri Lanka, a developing country, are given equal priority regardless of their development.
The UN is an international organisation with 193 UN Member States.