Reading Comprehension (RC) | Re: Structural unemployment—the unemployment that remains even at the peak

Need a help on answering (Book Question: 8)

The passage suggests that the phenomenon of combined unemployment and inflation is
A.a socioeconomic problem that can only be addressed by government intervention
B.a socioeconomic problem that can be characteristic of periods of structural unemployment
C.an economic problem that results from government intervention in management-labor relations
D.an economic problem that results from imperfect applications of technology
E.an economic problem that