thE pAssAgE mAinly tAlks ABout ______.
A．why ComputEr CrimEs ArE DiFFiCult to DEtECt By CompAniEs
B．why ComputEr CriminAls CAn oFtEn EAsily EsCApE punishmEnt
C．how ComputEr CriminAls Commit A CrimE
D．why ComputEr CrimEs CAn't BE DEtECtED