To establish a market economy system, corresponding laws and regulations should be established to regulate market competition. Essentially, market economy is legal economy. Therefore, it is impossible to establish a market economy system in a country with a weak legal system. Which of the following, if true, would most weaken the conclusion? ['Market economy and legal economy are not a same concept.', 'A sound legal system can effectively guarantee equality in competition.', 'A complete legal system is of great significance to the development of a market economy.', 'The improvement of the legal and regulatory system depends on the improvement of the market economy system.']