Mumbai is the capital of Maharashtra. Jaipur is the capital of Rajasthan. Lucknow is the capital of Uttar Pradesh. Chandigarh is the capital of Haryana and Punjab. Also a Union Territory. So Mumbai, Jaipur, and Lucknow is the capital of single state but Chandigarh is the capital of two state. Also a Union Territory. Hence, Chandigarh is the correct answer.