New Delhi [India], March 30 (ANI): President Droupadi Murmu on Saturday conferred Bharat Ratna on four eminent personalities, including two former Prime Ministers, Chaudhary Charan Singh and PV Narasimha Rao. Former Bihar Chief Minister Karpoori Thakur and agronomist MS Swaminathan were also conferred with the country’s highest civilian award. The central government announced five names for the Bharat Ratna this year, which also included BJP leader LK Advani. Sources said that President Murmu will pay a visit to senior BJP leader LK Advani’s residence and confer him with the prestigious award….