Explanation:

Both codes  1&2 are correctly paired.

• INS Viraat (decommissioned): INS Vikrant was followed by the Centaur-class carrier HMS (Her Majesty's Ship) Hermes from the UK, which was rechristened in India as INS Viraat and served in the Indian Navy from 1987 to 2016. 
• INS Vikramaditya: It is the Indian Navy’s largest aircraft carrier and warship converted from the Russian Navy’s decommissioned Admiral Gorshkov/Baku.
• INS Vikramaditya is a modified Kiev-class aircraft carrier that was commissioned into service in November 2013.
• INS Vikrant (decommissioned): Beginning with INS Vikrant which served India from 1961 to 1997.
• India acquired the Vikrant from the United Kingdom in 1961, and the carrier played a stellar role in the 1971 war with Pakistan that led to the birth of Bangladesh.
• In 2014, INS Vikrant, was broken down in Mumbai.

Hence option 2nd is correct.