whiCh oF thE Following BEst DEsCriBEs thE EFFECt oF irving's pErsonAl quAlitiEs on his litErAry suCCEss A.his pErsonAl quAlitiEs wErE EntirEly rEsponsiBlE For his litErAry suCCEss. B.his pErsonAl quAlitiEs wErE primArily rEsponsiBlE For his litErAry suCCEss. C.his pErsonAl quAlitiEs, hAD somE EFFECt on his litErAry suCCEss. D.his pErsonAl quAliFiEs hAD no EFFECt on his litErAry suCCEss.