Correct option is B
The Vice President of India acts as the ex-officio Chairman of the Rajya Sabha and can preside over its sessions without being a member of the Rajya Sabha. This is a unique feature of the Indian parliamentary system, where the Vice President holds the position of the presiding officer of the Rajya Sabha without being an elected member of either house of Parliament. The Speaker of the Lok Sabha, on the other hand, must be an elected member of the Lok Sabha.