Which of the following statements is correct about the C#$.$NET program given below if a value $"4"$ is input to it$?$

using System;

namespace IndiabixConsoleApplication

$\{$

class MyProgram

$\{$

static void Main $($string $$ args$)$

$\{$

int index;

int val $=66$;

int $a=$ new int $5$;

try

$\{$

Consote.Write $("$Enter a number: $")$;

index $=$ Convert. ToInt$32($Console$.$ ReadLine