Which of the following is NOT a Bitwise operator in C#.NET?

int num = 1, z = 5;

if (!(num <= 0))
    Console.WriteLine( ++num + z++ + " " + ++z ); 
else
    Console.WriteLine( --num + z-- + " " + --z ); 

1. >=
2. !=
3. Not
4. <=
5. <>=

Console.WriteLine(13 / 2 + " " + 13 % 2); 

1. ++a++;
2. a += 1;
3. a ++ 1;
4. a = a +1;
5. a = +1;

if ((n&16) == 16)
Console.WriteLine("Fourth bit is ON");

if ((n&8) == 8)
Console.WriteLine("Fourth bit is ON");

if ((n ! 8) == 8)
Console.WriteLine("Fourth bit is ON");

if ((n ^ 8) == 8)
Console.WriteLine("Fourth bit is ON");

if ((n ~ 8) == 8)
Console. WriteLine("Fourth bit is ON");

byte b1 = 0xF7;
byte b2 = 0xAB;
byte temp;
temp = (byte)(b1 & b2);
Console.Write (temp + " ");
temp = (byte)(b1^b2);
Console.WriteLine(temp);