Quiz — Default values

Consider the following program.

sub MAIN($a = 'abc', $b = 'def') {
    say $a;
    say $b;
}

1

What does it print if it is run as shown below?

$ raku t.raku

abc def

Enter the output values: ␣␣␣ and ␣␣␣

Now, the same program is run as:

$ raku t.raku xyz

xyz def

Enter the output values: ␣␣␣ and ␣␣␣

Finally, this command:

$ raku t.raku xyz 123

xyz 123

Enter the output values: ␣␣␣ and ␣␣␣