Which of the following statements are correct? Answer by using the code given below:
1. Persons in Govt/Judicial service need not resign to participate in District judge selection process held in "Vijay Kumar Misra and another v. High Court of Judicature at Patna" by the Supreme Court of India
2. The Supreme Court of India held in S. Kazi v. Muslim Education Society that " All Tribunals are not necessary parties to the proceedings where legality of its orders challenged"
3. The Supreme Court of India observed in Cardanumom Marketing Corporation and others v. State of Kerala and others that Social Security to the legal profession becomes an essential part of legal system
4. The Supreme Court of India held in 'Union of India v. Rajasthan High Court and others that High Court judges are exempted from Airport frisking.