Statement (A) is correct: The Planning Commission of India was an extra-constitutional body. It was set up by a Resolution of the Government of India in March 1950 and was not defined in the Constitution. Statement (B) is correct: The Planning Commission was an advisory body to the government. The tenure of its members, including the Vice- Chairman, was not fixed by any law or constitutional provision and depended on the discretion of the government.Since both statements are correct, option C is the correct answer.