The correct option is A 1st January 1995
1:The World Trade Organisation (WTO) is an
intergovernmental organisation which regulates international trade.
2:The
WTO officially commenced on 1 January 1995 under the Marrakesh
Agreement, signed by 123 nations on 15 April 1994, replacing the General
Agreement on Tariffs and Trade (GATT), which commenced in 1948.