Which of the following code snippets are the correct way to determine whether a is Odd or Even? 1 int a; String res; if (a % 2 == 0) res = "Even"; else res = "Odd"; 2 int a; String res; if (a Mod 2 == 0) res = "Even"; else res = "Od

Which of the following code snippets are the correct way to determine whether a is Odd or Even?

1 int a;
String res;
if (a % 2 == 0)
res = "Even";
else
res = "Odd";

2 int a;
String res;
if (a Mod 2 == 0)
res = "Even";
else
res = "Odd";

3 int a;
Console.WriteLine(a Mod 2 == 0 ? "Even": "Odd");

4 int a;
String res;
a % 2 == 0 ? res = "Even" : res = "Odd";
Console.WriteLine(res);