Which one is right about three methods of outlier mining?

A、Statistics-basedapproachissimpleandfastbutdifficulttodealwithperiodicitydataandcategoricaldata.;
B、Theefficiencyofdistance-basedapproachislowforthegreatdatasetinhighdimensionalspace.;
C、Distance-basedapproachcannotbeusedinmultidimensionaldataset.;
D、Density-basedapproachspendslowcostonsearchingneighborhood.