An administrator created a .env file in a user's home directory to configure a number of custom environment variables for a local application. However, after the user logs out and then logs back into the system, the custom variables are not being set.<br /> What is the most likely reason that the custom .env file is being ignored?()
A、A shell other than ksh is being used by the user.
B、The line 'export ENV=$HOME/.env' is missing from /etc/profile.
C、The line 'export ENV=$HOME/.env' is missing from the user's .profile.
D、The env_profile attribute is not defined for the user within /etc/security/user.