题目内容：
Federal Deposit Insurance Corporation Before 1933, and particularly during the period 1929-33, bank failures were not un- common.______1 a bank overextended itself in creating credit or if several of its important loans could not be______2 , depositors in the bank would frequently become panicky and be- gin to make large withdrawals.______3 the bank had only a small number of its deposits backed by currency, the bank would soon be unable to meet withdrawals, and most depositors______4 their money. Most frequently a bank merely needed time to improve its cash position by______5 some of its loans and not making additional ones. In 1933, the number of bank failures______6 a peak, forcing the federal government to intervene and ______7 the banks temporarily. To help restore the public's confidence______8 banks and strengthen the banking community, Congress passed legislation setting up the Federal Deposit Insurance Corporation.______9 corporation, an agency of the federal government, now insures over 90 percent of all mutual savings and commercial bank deposits for______10 $100,000 per deposit. The FDIC has______11 its insurance fund by charging member institutions one-twelfth of 1 percent of their total deposits. As a result of the protection provided by the FDIC and through other kinds of supervision, bank failures have been______12. to a few isolated instances. When de- posits are federally insured, people______13 rush to withdraw their money if they______14 the financial condition of their bank. The delay gives the banks the necessary time to adjust their cash credit balance, and this action helps to reduce the______15 of bankruptcy. 请选择（1）处的最佳答案．
A．Although B．Even if
C．If
D．Because
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