During a July 4^th Firecracker Party, a Pop Bottle Rocket

During a July 4^th firecracker party, a pop bottle rocket laying still on the ground explodes, sending fragments everywhere. If the momentum of the pop bottle rocket (ignore friction!) initially at rest is conserved during an explosion, what can be said about the kinetic energy of various fragments after the collision?

A) The KE of various parts of the system are necessarily conserved.
B) The sum of all the KE of the various pieces equals what it was originally.
C) The total KE afterwards is greater that what it was initially.
D) The total KE afterwards is less that what it was initially.