Explanation:

• CIRUS was completed in early 1960 and after achieving criticality in July 1960, was inaugurated by Nehru in January 1961. Construction of a third research reactor, ZERLINA (Zero Energy Reactor for Lattice Investigations and New Assemblies) began at Trombay in 1958; ZERLINA was also commissioned in 1961
• The Fast Breeder Test Reactor (FBTR) is a breeder reactor located at Kalpakkam, India. The Indira Gandhi Center for Atomic Research (IGCAR) and Bhabha Atomic Research Centre (BARC) jointly designed, constructed, and operate the reactor.

Hence option 3rd is correct.