Which country can be considered as a developed country in the modern world? Select your answer from the following statements.

(a) Countries which have accumulated huge amount of wealth and always secures the future of their citizens. These countries are considered to be developed.

(b) Countries which are among the highest in the ?Human Development Index? are considered to be the developed countries.

(c) Only rich countries are considered to be developed because people have money to buy everything needed for human beings?both material and non-material.

(d) Iran is a rich country and therefore it is a developed country.