Which of the following statements about the Vice- President of India is / are correct?
A. He is ex – officio chairman of the Rajya Sabha
B. He must be member of the Rajya Sabha for his/ her election as Vice – President
C. He is elected by members of both houses of Parliament and the state Legilative Assemblies.
D. If the President resigns or dies, the Vice – President officiates as President for not more than Six months