[单选]
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.
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.

DS5020磁盘阵列支持 SAS 和 SATA 磁盘的混插。急性毒性试验的目的是什么？结合实例，分析一份完整的营销计划包括哪些内容。水文现象的变化，既有确定性又有随机性，因此，水文计算和水文预报中，应根据具体情况，采用成因分析法或数理统计法，或二者相结合的方法进行研究。（）是液化石油气瓶内介质处于气―液平衡两项共存状态时，气相部分所占的空间。水容积；。气相空间；。气体空间。剩余空间。

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.
What is the most likely reason that the custom .env file is being ignored?（）

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