Given below are two statements – one is labelled as Assertion (A) and the other is labelled as Reason (R) :
    Assertion (A) : Industrial relations constitute one of the most delicate and complex problems of modern industrial society, which is characterized by rapid change, industrial unrest and conflicting ideologies in the national and international spheres
    Reason (R) : It is a dynamic concept with depends upon the pattern of society, economic system and political set-up of a country and changes with the changing economic and social order 
    In the light of the above two statements, choose the correct option :