The correct option is A 1931
After a resolution of supporting the movements of the princely states was passed in Haripura summit of the congress in 1938 CE, Praja Mandals were systematically organised in various princely states. Bundi Prajamandal and Jaipur Prajamandal were set up in 1931 by Kantilal and Jamnalal Bajaj along with Kapurchand Patn respectively.