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正确答案：C
解析：文章第二段提到Those income-earning financial assets...mortgage loans for housing。银行的收入来源很广，包括与个人与签订的bills, notes, and bonds等等，概括起来就是Deposits invested in financial assets。

参考答案：Antonymy refers to the relationship between two or rarely more words of the same language, belonging to the same part of speech, identical in style. and nearly identical in distribution, associated and used together so that their denotative meanings render contrary or contradictory notions. There are three types of antonymy1) Complementary antonymy refers to the relation between two words that the denial of one member implies the assertion of the other, and vice versa.e.g. male vs. Female; alive vs. dead; boy vs. girl; odd vs. evenThe relation between the members of the pair of complementary antonyms can be best represented in the following diagram: 2) Gradable antonymy refers to the relation between two words that the two words in question are the two extremes between which different degrees of grades can be distinguished. See more examples as the following:good vs. bad; fat vs. skinny; wide vs. narrow; fast vs. slowMany pairs of gradable antonyms contain one marked term and one unmarked, e.g. old/young, heavy/light, fast/slow where the second term is more restricted in distribution than the first. The relation between members of the pair of gradable antonymy can be represented in the following way: 3) Relational antonymy refers to the relation between the two items do not constitute a positive-negative opposition, and the existence of one of the pair presupposes the existence of the other, or one of them cannot be used without suggesting the other. See more examples as the following:e.g. predecessor vs. successor; parent vs. child; teacher vs. student lend vs. borrow; employer vs. employee; buy vs. sell

正确答案：D