Answer:
A. Liquidity risk
Explanation:
Since in the question it is mentioned that the rumor has started stated that the bank has suffered significant losses due to which they are unable to honor their promises to depositors with resulted that the depositors withdraw their deposit in the next morning.
This situation represents the liquidity risk as the bank is not able to repay its short term obligations or debt due to which they have been suffered from the losses as it is a situation when the current assets are not converted into the cash within 12 months.