Which of the Following Is a Possible Drawback of a Bank

Which of the following is a possible drawback of a bank run?​

A) ​It leaves the banks with excess reserves.
B) ​It leads to a fall in investment activities because of lack of loans available to business firms.
C) ​It leads to a fall in the demand for loans by the business firms.
D) ​It leads to an excessive increase in the supply of money by the banks.