Which one of the following statements about the Union Executive in Ind

Which one of the following statements about the Union Executive in India is correct?

According to the Constitution of India, the total number of members of the Council of Ministers cannot exceed 20% of the total number of Members of the House of the People.
The rank of the different Ministers is determined by the President.
The Ministers are appointed by the President on the advice of the Prime Minister.
Only a member of either House of Parliament can be appointed as a Minister.
This question was previously asked in
UPSC NDA-2 – 2016
Statement A is incorrect. The Constitution was amended by the 91st Amendment Act, 2003, which added Article 75(1A), stating that the total number of Ministers, including the Prime Minister, in the Council of Ministers shall not exceed fifteen per cent of the total number of members of the House of the People. The limit is 15%, not 20%.
Statement B is incorrect. While the Ministers are appointed by the President, their rank (Cabinet Minister, Minister of State, etc.) and portfolios are determined by the Prime Minister, who heads the Council of Ministers.
Statement C is correct. Article 75(1) of the Constitution explicitly states, “The Prime Minister shall be appointed by the President and the other Ministers shall be appointed by the President on the advice of the Prime Minister.”
Statement D is incorrect. Article 75(5) states that a person who is not a member of either House of Parliament can be appointed as a Minister, but they must become a member of either House within six consecutive months, failing which they cease to be a Minister. Therefore, being a member at the time of appointment is not mandatory.
The President is the head of the Union Executive, but acts on the aid and advice of the Council of Ministers headed by the Prime Minister. The Prime Minister plays a crucial role in the appointment and allocation of portfolios among ministers.
Article 74(1) states that there shall be a Council of Ministers with the Prime Minister at the head to aid and advise the President who shall, in the exercise of his functions, act in accordance with such advice. This highlights the real executive authority resting with the Council of Ministers led by the PM.