In April 2018, the Number of Jobs Increased by 164,000

In April 2018, the number of jobs increased by 164,000, but the number of unemployed dropped by 239,000. How can that be explained?

A) In addition to those who found jobs, some of the unemployed stop looking for work altogether and were thus no longer counted as unemployed.
B) This reflects people moving to other countries for work.
C) Typically this is a result of large segments of the employed population taking incentives for early retirement thus creating more openings where retiring workers are replaced with lower paid employees.
D) All of the above