An economics college has introduced 30 kinds of teaching materials from abroad, of which 12 are financial teaching materials, 10 are non-financial English teaching materials, 7 are non-financial teaching materials imported from the United States, and 9 are non-English teaching materials imported from countries outside the United States. From the above, it can be inferred? ['Imported from the United States, no more than 8 kinds of non-English financial textbooks.', 'There are at least 8 types of non-English finance textbooks imported from the United States.', 'No more than 8 non-English financial textbooks introduced from countries outside the United States.', 'There are at least 8 types of non-English financial textbooks imported from countries outside the United States.']