Which is not resolving with NSAIDs

A child having past history of a pharyngitis for 6-7 days now complaining of symmetrical small joint pain,which is not resolving with NSAIDs .on evaluation his ASo titre is raised,doesnot belong to endemic Rheumatic fever population,other examination finding are normal,provisional being-

A.JIA
b.Rheumatic fever
c.Post streptococcal Re A
d.NONE