Hw c#

From the code snippet below, what does the statement at line 3 do? int ival = 500: object obj = ival: int rval = (int)obj: box unbox create a reference object none of the above A downcast is a (narrowing) conversion (cast) that moves the object reference to a direct scalar value object reference towards the object class type object reference is generic object reference towards most derived class type How many bytes are in a C# char? 2 1 8 4