Of the items listed below, which one() should be sved into the process control block Ⅰ.Pr
Of the items listed below, which one() should be sved into the process control block Ⅰ.Process nmend process number Ⅱ.Process running informtion Ⅲ.Current opened file informtionⅠnd Ⅱ B.Ⅰnd Ⅲ C.Ⅱnd Ⅲ D.Ⅰ、Ⅱnd ⅢA.Ⅰ and ⅡB.Ⅰ and ⅢC.Ⅱ and ⅢD.Ⅰ、Ⅱ and Ⅲ