It is just to say that they are feeling the financial pain of the recent disaster . First National Bank of Nevada , based in Reno , Nevada , and First Heritage Bank of Newport Beach , Calif. , were both shut down by federal regulators recently . Which countries have the safest banks in the world ?
According to the above context, choose the best option to answer the following question.
Question: Why may the banks have been shut down ?
Options:
A. Due to the fact they were in Reno and Newport Beach .
B. Due to financial pain .
C. Due to the country having safe banks .
D. Due to a disaster .


D