单项选择题CDE is working. However, the customized PATH environment has not been implemented. Which of the following procedures should be performed to activate the implementation?()
A.Update the .kshrc file
B.Edit $HOME/.dtprofile, and uncomment the DTSOURCEPROFILE=true
C.Copy /etc/.profile to $HOME/.dtprofile and edit the file as needed
D.Double click on the System Administration icon and select CDE profile