Which of the following countries is not in the G7 Group?

The Group of Seven (G7) is an inter-governmental political forum consisting of Canada, France, Germany, Italy, Japan, the United Kingdom and the United States . In addition, the European Union is a 'non-enumerated member'. Its members are the world's largest IMF advanced economies and wealthiest liberal democracies. It was founded in 1975. Recently Prime Minister Narendra Modi went Germany as a special invitee to the G7 meeting on June 26 and 27. Among the special invitees to the G-7 summit are the leaders of Argentina, Indonesia, Senegal and South Africa.