Quiz — Multi-`MAIN`

There are three versions of the MAIN function in this program:

multi sub MAIN() { say 'Default mode' }
multi sub MAIN('help') { say 'Help mode' }
multi sub MAIN(Str $mode) { say "Mode '$mode'" }

What does the program print if it is run by one of the following commands:

1

$ raku t.raku new

Prints “Mode 'new'”

(: Prints “Default mode”, Prints “Help mode”, Prints “Mode 'new'”, Terminates with an exception :)

$ raku t.raku 1001

Prints “Mode '1001'”

(: Prints “Default mode”, Prints “Help mode”, Prints “Mode '1001'”, Terminates with an exception :)

$ raku t.raku

Prints “Default mode”

(: Prints “Default mode”, Prints “Help mode”, Prints “Mode ''”, Terminates with an exception :)

$ raku t.raku Help

Prints “Mode 'Help'”

(: Prints “Default mode”, Prints “Help mode”, Prints “Mode 'Help'”, Terminates with an exception :)

Parameters are case sensitive in this case.