Evaluatethefollowingcommand：SQL>ALTERSYSTEMSETdb_securefile=’IGNORE’；WhatistheimpactofthissettingontheusageofSecureFiles？（）
A.ItforcesBasicFilestobecreatedeveniftheSECUREFILEoptionisspecifiedtocreatetheLOB
B.ItforcesSecureFilestobecreatedeveniftheBASICFILEoptionisspecifiedtocreatetheLOB
C.ItdoesnotallowthecreationofSecureFilesandgeneratesanerroriftheSECUREFILEoptionisspecifiedtocreatetheLOB
D.ItignorestheSECUREFILEoptiononlyifaManualSegmentSpaceManagementtablespaceis