Which of the following Houses of Parliament is also called the House of Elders?

The Rajya Sabha, or Council of States, is called the House of Elders because it is a permanent body that is never dissolved, with one-third of its members retiring every two years, and its members must be at least thirty years old. The Lok Sabha is the popularly elected lower House. A Vidhan Sabha is a State Legislative Assembly, and a Gram Sabha is the village assembly under Article 243A.