smbclient is a command-line tool that provides access to SMB/CIFS shares.
What is the smbclient command?
smbclient is a command-line tool that provides access to SMB/CIFS shares. smbclient is a samba client with an "ftp like" interface. It is a useful tool to test connectivity to a Windows share. It can be used to transfer files, or to look at share names. In addition, it has the ability to backup and restore files from a server to a client and visa versa.
Example:
#smbclient -L server1
The above command will list all shares on server1.
Some useful options are as follows:

Answer option C is incorrect. scp copies files between hosts on the Linux network.
Answer option A is incorrect. rsync is a fast and extraordinarily versatile file copying tool. It can copy locally, to/from another host over any remote shell or to/from a remote rsync daemon.
What is rsync?
In computing, rsync is a software application for Unix systems. It synchronizes files and directories from one location to another while minimizing data transfer using delta encoding. It can copy or display directory contents and copy files, optionally using compression and recursion.
In daemon mode, rsync listens to the default TCP port of 873, serving files in the native rsync protocol or via a remote shell such as RSH or SSH. In the latter case, the rsync client executable must be installed on both the local and remote hosts.
Answer option B is incorrect. mutt is a small but very powerful text based program for reading electronic mail under Linux operating systems.