As an Occupational Trend, If Less People Pursue Teaching Careers

As an occupational trend, if less people pursue teaching careers which of the following may most likely occur?

A) School districts may investigate ways to encourage students to become teachers through mentor programs.
B) School districts may look for ways to encourage current teachers to delay retirement.
C) A labor shortage of teachers will occur thereby impacting the quality of the education system.
D) A and B are correct.
E) All of the above are correct.