Explanation:

Third option is correct.

Turkmenistan is not a member of Shanghai Cooperation Organisation (SCO).
The Shanghai Cooperation Organisation (SCO) is an Eurasian political, economic, and security organisation, the creation of which was announced on 15 June 2001 in Shanghai, China by the leaders of China, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, and Uzbekistan; the Shanghai Cooperation Organisation Charter was signed in June 2002 and entered into force on 19 September 2003. These countries, except for Uzbekistan, had been members of the Shanghai Five group, founded on 26 April 1996 in Shanghai. India and Pakistan have joined SCO as full members on 9 June 2017 in Astana, Kazakhstan.