How long did the Pony Express exist

A．promises useful advice to those looking for employment
B．divides available jobs into various types
C．informs employers that people are available for their job vacancies
D．informs job hunters of the job vacancies

A．The new type of advertisement means to offer help in people’s applying for job vacancies.
B．Your search is over, I am the person you are looking for is a frequently used trick to impress potential employers,
C．There was a time when an application letter and an interview were all that was needed to get a job.
D．The number of job hunters with a college degree has been on the rise ail these years.