A.15.
B.13.
C.50.
D.30.

A.A former rebel group from the Tutsis ethnic majority.
B.A former rebel group from the Hutu ethnic majority.
C.A former rebel group from the Tutsis ethnic minority.
D.A former rebel group from the Hutu ethnic minority.
A.In last October.
B.In last December.
C.In February.
D.In last November.
A.a car explosion.
B.an insurgent bomb.
C.the shooting of the U.S. Marines.
D.a suicide bomb.