Usingoutputfromvmstat28 whichofthefollowingoptionsismostappropriatetoconsiderwhendeterminingifasystemisexperiencingmemorythrashing?()

Usingoutputfrom"vmstat28,"whichofthefollowingoptionsismostappropriatetoconsiderwhendeterminingifasystemisexperiencingmemorythrashing？（）

A、cy!=1

B、re!=0

C、po/fr>1/6

D、fr/po>1/6