All of the following Countries are not the members of ‘QUAD’ group except:

Aslam O Aleikum Respectable Admin / Moderator ..
As ,I myself have posted this MCQ . After Proof-reading ,I just have come to know that A typological error has been made at my side .As ,It’s Answer Should be ( C) – JAPAN instead of SOUTH AFRICA . Hence , I found Question Correct followed by Given options .There is only need to Correct Answer ( C) JAPAN ( make it BOLD letter caption as right answer ) instead of South Africa .
You are requested to have look at my Query as ,accuracy and Public Faith on this Prestigious Website can be maintained in true letter and Spirit . Sorry for inconvenience ( Typological Error ) at my part .
Regards :-