Which one of the following statements about the Missile Technology Con

Which one of the following statements about the Missile Technology Control Regime is not correct?

The Missile Technology Control Regime is an informal and voluntary partnership initially formed among G-7 countries.
Members of the Missile Technology Control Regime prevent the proliferation of missile and unmanned aerial vehicle technology capable of carrying above 500 kg payload for more than 300 km.
China applied to join the Regime but members did not offer the membership.
No other country outside the membership follows the Regime rules.
This question was previously asked in
UPSC CDS-2 – 2016
The statement “No other country outside the membership follows the Regime rules” is not correct.
The Missile Technology Control Regime (MTCR) is an informal political understanding among member states. While its rules are binding only on members, many non-member countries have enacted national export control laws and regulations that are consistent with MTCR guidelines, demonstrating adherence to its principles even without formal membership.
Statements A, B, and C are correct. The MTCR was established in 1987 by G-7 countries (Canada, France, Germany, Italy, Japan, the United Kingdom, and the United States). Its primary goal is to prevent the proliferation of missile and unmanned aerial vehicle systems capable of delivering weapons of mass destruction. Category I items under the MTCR include systems capable of delivering a payload of at least 500 kg to a range of at least 300 km. China is not a member of the MTCR, although it has expressed interest and stated its commitment to abide by some of the regime’s guidelines.