Answer:
C. Banks began to lose so much money that they had to close
Step-by-step explanation:
If you stop paying on a loan, you eventually default on that loan. The result: You'll owe more money as penalties, fees and interest charges build up on your account. Your credit scores will also fall.
Failure to pay the IMF would entitle some of Greece's other creditors, including the European bailout fund, to declare a default. They would then have the option to demand immediate repayment of all their loans, a process known as acceleration. Other lenders could then follow suit. Each creditor decides on its own.