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 ?

Based on the preceding passage, choose your answer for question Why may the banks have been shut down ?
Select from the following.
(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 .
The answer is:
(D).