How long did the Pony Express exist

A．unemployment rate has been climbing
B．there is a lack of jobs available for Mist
C．the job history is considered to be a work of art
D．there is a shortage of top level jobs

A．jobs are becoming very complicated nowadays
B．other means of job application are scarce
C．there has been an increase in the number of jobs advertised
D．there has been an increase in the number of applications with degrees