Answer is (c)
Russian Federation — 22nd August 2012.
China became member on 11th December 2001.
There were 128 members that ratified the GATT agreement in 1995, including India. India became the member of GATT on India 8 July 1948 and became member of the WTO on 1st January 1995. Switzerland joined GATT on 1st August 1966 and hence is a member of WTO from 1995 onwards.