100. Match the following numbered security models with the appropriate lettered security <p>descriptions: </p>

A、Thismodelblockslower-classifiedobjectsfromaccessinghigher-classifiedobjects,thusensuringconfidentiality.
B、The*propertyofthismodelcanbesummarizedas“nowrite-up.”
C、Thismodelusessecuritylabelstograntaccesstoobjectsviatransformationproceduresandarestrictedinterfacemodel.
D、Thismodelfocusesonthesecurecreationanddeletionofsubjectsandobjectsusingeightprimaryprotectionrulesoractions.