Which of the following line of code is suitable to start a thread? class X implements Runnable { public static void main(String args[]) { /* Missing code? */ } public void run() {} }

• Thread t = new Thread(X);
• Thread t = new Thread(X); t.start();
• X run = new X(); Thread t = new Thread(run); t.start();
• Thread t = new Thread(); x.run();