Which one of the following is NOT mentioned in the llst of the military equipment handed over

A．The RUF seized military equipment from U.N. peacekeepers earlier this year.
B．The logistical problems prevented the return of all the U.N. equipment.
C．The rebels seized the military equipment when they surrounded and seized several U. N peacekeepers.
D．The U.N. troops later escaped from the prison.

A．They pay the same wage.
B．They involve working outdoors.
C．They can be substituted for college students.
D．They're part-time.