Explanation:

A dichotomy exists with regard to Articles 233 and 312.

• Article 233(1) of the Constitution lays down that “appointments of persons to be, and the posting and promotion of, district judges in any State shall be made by the Governor of the State in consultation with the High Court exercising jurisdiction in relation to such State”.
• The 42nd Constitutional amendment in 1976 amended Article 312 (1) empowering Parliament to make laws for the creation of one or more All-India Services, including an  All India Judicial Service (AIJS), common to the Union and the States.
• However, Clause 3 of Article 312 places a restriction that such a service shall not include a post inferior to that of a district judge.
• The amendment also brought about a significant change in the Seventh Schedule — Entry 3 of List II in its entirety was placed as Entry 11A in List III.

Hence all statements are correct.