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