The United Nations Security Council established the ICTR in 1995 to try the alleged perpetrators of the 1994 ______ in Rwanda that claimed the lives of more than 800,000 people.

A．drawing an analogy between asymmetry in lobsters and handedness in humans
B．developing a method for predicating whether crusher claws in lobster will appear on the left or right side
C．explaining differences between lobsters' crusher claws and cutter claws
D．discussing a possible explanation for the way bilateral asymmetry is determined in lobsters

A．The loss of a claw during the third or earlier stage of development
B．The lose of claw during the fourth or fifth stage of development
C．The loss of a claw during the sixth stage of development
D．Development in an environment devoid of material that can be manipulated