For a long time to come, China's economic development level, with GD. P per capita as the main indicator, will still have some difficulties in catching up with western developed countries. Then, the question now is whether China can only reach the same level as western developed countries. Is the level of development necessary to establish a basic social security system covering all members of society? If the answer is yes, it means that China will not be able to establish a social security system covering all members of society for a long time to come, and this obviously does not meet the requirements of development. What is the author's opinion through this passage? ['It is difficult for China to catch up with western developed countries.', 'China does not have the conditions to establish a basic social security system covering all members of society.', 'A social security system covering all members of society cannot be established until China catches up with the level of development of Western developed countries.', 'China will not be able to establish a social security system covering all members of society for a long time to come.']