LPI Exam Questions

What does the following command accomplish:$ export PATH=$PATH:

What does the following command accomplish:
$ export PATH=$PATH:$APPLICATIONS

A.
Changes path to the applications directory.

B.
Updates the path with the value of $APPLICATIONS.

C.
All NFS users can mount the applications directly.

D.
Updates path with the applications directory.

Explanation:
????
There is no such thing as an "application directory"