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The answer is B. -- Results in higher job satisfaction.
Realistic Job Preview is a mechanism for providing realistic information about a job prior to a person becoming employed. The research on realistic job previews shows that when accurate information about both negative and positive aspects of the job is provided to applicants or newcomers prior to their starting work in an organization, their expectations are more likely to be met. As a result satisfaction and job performance are often higher and turnover lower than when such information is not provided.
Answer B. Mr. Vahid has explained it nicely.