question_answer

Match the following

List-I		List-II
A.	Moderator	1.	Graphite
B.	Control rod	2.	Boron
C.	Poison	3.	Concrete
D.	Shield Material	4.	Hafmium

Codes:

A) A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2

B) A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]4

C) A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1

D) A\[\to \]1, B\[\to \]4, C\[\to \]2, D\[\to \]3