The signatories to the treaty banning chemical weapons include

Option 1 is correct. The Chemical Weapons Convention (CWC), opened for signature in January 1993, attracted virtually all major powers and subsequently gained near-universal membership; by entry into force it encompassed the great powers and a very large number of states (the treaty ultimately reached well over 190 accessions) [1]. Authoritative lists of original signatories to the CWC include the United States, the Russian Federation, India, Iran and Israel among those that signed the treaty when it was opened for signature, confirming that all five countries named in option 1 were signatories to the treaty banning chemical weapons [2].

Sources

1. [1] Contemporary World Politics, Textbook in political science for Class XII (NCERT 2025 ed.) > Chapter 5: Security in the Contemporary World > Security in the Contemporary World 69 > p. 69
2. [2] https://www.cwc.gov/cwc_treaty_statesParties_original.html