In the context of globalization, the problem of profit transfer by multinational companies has increasingly become the focus of government attention. If this problem is not resolved, it will exacerbate the inequality of income distribution between large capital and labor. The company's corporate income tax rate, or the formation of new rules of cross-border tax governance, otherwise, this will be a difficult problem. If the above statement is true, which of the following statements must be true? ['Countries can formulate uniform corporate income tax rates or form new rules for cross-border tax governance, which can solve the problem of profit transfer of multinational companies.', 'If the problem of profit transfer of multinational companies is solved, the inequality of income distribution between large capital and labor can be eliminated.', 'If countries do not formulate uniform corporate income tax rates or do not form new rules for cross-border tax governance, the inequality of income distribution between large capital and labor will be further exacerbated.', 'If countries do not set a uniform corporate income tax rate, the formation of new rules for cross-border tax governance will not solve the problem of profit transfer of multinational companies.']