Which one of the following statements is not correct regarding the Off

Which one of the following statements is not correct regarding the Office of the Vice President of India?

The Vice President is elected by an electoral college consisting of the elected members of both the Houses of the Parliament.
The Vice President is elected in accordance with the system of proportional representation by means of single transferable vote.
The Vice President shall not be a member of either House of the Parliament or of a House of the Legislature of any State.
The Vice President of India shall be ex officio Chairman of the Council of States and shall not hold any office of profit.
This question was previously asked in
UPSC CDS-1 – 2017
The election of the Vice President of India is governed by Article 66 of the Constitution.
Statement A: Article 66(1) states that the Vice President shall be elected by the members of an electoral college consisting of the members of both Houses of Parliament in accordance with the system of proportional representation by means of the single transferable vote. The electoral college for the Vice President consists of *all* members of both the Houses of Parliament (elected and nominated), not just the elected members. Therefore, this statement is incorrect.
Statement B: Article 66(1) specifies the method of election as proportional representation by means of single transferable vote. This is correct.
Statement C: Article 66(2) states that the Vice President shall not be a member of either House of Parliament or of a House of the Legislature of any State, and if elected while being a member, shall be deemed to have vacated the seat. This is correct.
Statement D: Article 64 states that the Vice President shall be ex officio Chairman of the Council of States (Rajya Sabha) and shall not hold any other office of profit. This is correct.
Therefore, statement A is the one that is not correct.
The electoral college for the Vice President comprises all members (elected and nominated) of both the Rajya Sabha and the Lok Sabha, unlike the President’s electoral college which includes only elected members of Parliament and State Legislative Assemblies.
The Vice President serves as the Chairman of the Rajya Sabha. In the event of a vacancy in the office of President or the President being unable to discharge his functions, the Vice President acts as President.