Which of the following is not under the powers and functions of the El

Which of the following is not under the powers and functions of the Election Commission of India?

Superintendence, direction and control of the preparation of electoral rolls
Conduct of elections to the Parliament and to the Legislature of each State
Conduct of election to the office of the President and the Vice President
Appointment of the Regional Commissioners to assist the Election Commission in the performance of the functions conferred on the Commission
This question was previously asked in
UPSC CDS-2 – 2018
The appointment of the Regional Commissioners to assist the Election Commission in the performance of its functions is not directly a power of the Election Commission of India.
Article 324(4) of the Constitution states that the President may appoint Regional Commissioners after consultation with the Election Commission.
The Election Commission of India has the power of superintendence, direction, and control of the preparation of electoral rolls (Article 324). It conducts elections to Parliament, State Legislatures, the office of the President, and the Vice President (Article 324). The ECI is consulted by the President regarding the appointment of Regional Commissioners, but the appointing authority is the President, not the ECI itself.