What is your understanding of settlement risk?

A、Theriskthatarisesatthetimeoffinalsettlementwheneachpartydoesnotmeetitsobligationsunderthecontractwithoutconcernoftime
B、Theriskthatarisesattheendofsettlementwhenonepartydefaultsonitspayments
C、Theriskthatarisesatthetimeoffinalsettlementiftherearetimingdifferencesbetweenwheneachpartyperformsonitsobligationsunderthecontract
D、Theriskthatariseswhenacounterpartyrefusestorepaytheprincipalamountborrowed