Which of the following statements are correct? a. A municipality was established at Abu in 1864. b. Before becoming part of ‘modern’ Rajasthan, Sirohi changed hands between Bombay Presidency and Rajputana. c. The United State of Rajasthan came into being on June 19, 1950. d. In Rajasthan, an Integration Committee was appointed on 9 April 1949, with Rajpramukh as its Chairman. Choose the most appropriate answer from the options given below: