Oneoftheusecasesinyourwebapplicationusesmanysession-scopedattributes.Attheendoftheusecase，youwanttoclearoutthissetofattributesfromthesessionobject.Assumethatthisstaticvariableholdsthissetofattributenames：201.privatestaticfinalSetUSE_CASE_ATTRS；202.static{
题目
Oneoftheusecasesinyourwebapplicationusesmanysession-scopedattributes.Attheendoftheusecase，youwanttoclearoutthissetofattributesfromthesessionobject.Assumethatthisstaticvariableholdsthissetofattributenames：201.privatestaticfinalSetUSE_CASE_ATTRS；202.static{203.USE_CASE_ATTRS.add（"customerOID"）；204.USE_CASE_ATTRS.add（"custMgrBean"）；205.USE_CASE_ATTRS.add（"orderOID"）；206.USE_CASE_ATTRS.add（"orderMgrBean"）；207.}Whichcodesnippetdeletestheseattributesfromthesessionobject？（）
A.session.removeAll（USE_CASE_ATTRS）；
B.for（Stringattr：USE_CASE_ATTRS）{session.remove（attr）；}
C.for（Stringattr：USE_CASE_ATTRS）{session.removeAttribute（attr）；}
D.for（Stringattr：USE_CASE_ATTRS）{session.deleteAttribute（attr）；}
E.session.deleteAllAttributes（USE_CASE_ATTRS）；