单选题：In bash，the command export is used__.

In bash，the command export is used__.@[C](1)
A. to run commands in a child shell
B. to use command history logs in a child shell
C. to set environment variables for other applications
D. to share out NFS partitions for other hosts




A.to run commands in a child shell
B.to use command history logs in a child shell
C.to set environment variables for other applications
D.to share out NFS partitions for other hosts


答案：C