Please find the output of given code block.def function $1($number$)$:n $=0$if number $==1$:n $=$ function$2()$return nelif number $==2$:n$=$ function$3()$return nelif number $==3$:return $("1003")$else:return $("1004")$def function$2()$:return "Hello"def function$3()$:returnprint$($function$1(1))$