Question: Why do Korn shell scripts need the # ! / bin / ksh on the first line? To tell the shell that the script is

Why do Korn shell scripts need the #!/bin/ksh on the first line?
To tell the shell that the script is executable and runs ksh commands
To tell the shell that the script is a comment line and that the script runs ksh
To tell the shell that the script is a comment line and that the script is found in /bin/ksh
To tell the shell that the script is executable and is stored in /bin/ksh

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