Reading Comprehension: The personal deposit of Bank of China Beijing Branch has exceeded 654.38 billion US dollars; Among the $2 billion in foreign exchange loans issued by the bank, there is a considerable sum. Using the exclusion method, select AB. Half of the accumulated foreign exchange loans issued by this bank come from individual residents. (the title only says that the accumulated payment in this bank ... a considerable proportion comes from individual deposits of residents. What is the considerable amount? It can't be exactly half, so it is excluded) C. The bank loan is 2 billion US dollars, a considerable part of which is lent to individual residents. D. The bank's personal foreign currency deposits have accounted for half of the total deposits.