What is the purpose of the iconv command?

What is the purpose of the iconv command?
A .  It converts bitmap images from one format to another such as PNG to JPE
C .  It verifies that the root directory tree complies to all conventions from the Filesystem Hierarchy Standard (FHS).
D .  It displays additional meta information from icon files ending in .ico.
E .  It changes the mode of an inode in the ext4 file system.
F .  It converts files from one character encoding to another.

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Answer: E