Which one is true regarding below swift code?

class ViewController: UIViewController, DataPass $\{$

var GameType: Int $=0$

var NoCorrect $=0$

$\}$

Question $4$ options:

$1.$NoCorrect is IBAction variable

$2.$GameType is IBOutlet variable.

$3.$ViewController class complies with DataPass protocol.

$4.$ViewController class is child of UIViewController protocol.