GMAT Verbal Section | Sentence correction

The inmates of Arizona state prison who are selected by the state forest department to work as wilderness firefighters eat in the same cafeterias, sleep in the same campsites, and wear the same uniforms as their professional counterparts do,defying the rigid relationship barriers enforced inside prison walls.


A. defying the rigid relationship barriers enforced
B. defying the relationship barriers enforced rigidly
C. they defy the rigid relationship barriers enforced
D. an arrangement to
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