Exercise: Deduce the Outputs

If the following program is written in file main.go, and is executed via the command line as go run main.go Evan Michael Laura what will the output be?

package main
import (
	"fmt"
	"os"
	"strings"
)

func main() {
	who := "World"
	
	if len(os.Args) > 1 { // os.Args[0] == hello_who
		who = strings.Join(os.Args[1:], " ")
	}
	fmt.Println("Hello", who, "!")
}