A、CliEnt is ADmittED For DEtoxiFiCAtion AFtEr A CoCAinE ovErDosE. thE CliEnt tElls thE nursE thAt hE FrEquEntly usEs CoCAinE But thAt hE CAn Control his usE iF hE ChoosEs. whiCh Coping mEChAnism is hE using A、withDrAwAl. B、logiCAl thinking. C、rEprEssion. D、DEniAl.