The correct option is "2 only" because the statement regarding the Chairman and Deputy Chairman of the Rajya Sabha is misleading; the Vice President of India, who is also the ex-officio Chairman of the Rajya Sabha, is not a member of the House in the way elected or nominated members are, but holds a unique role. In contrast, while nominated members of both the Lok Sabha and Rajya Sabha do not have voting rights in the presidential election as they do not contribute to the electoral college, they can vote in the Vice Presidential election since it is conducted by the members of the Rajya Sabha and Lok Sabha, where they hold membership rights. This differentiation in voting rights highlights the nuances of the Indian parliamentary system and the roles assigned to various types of members.