Consider the following statements in a nuclear reactor, self sustained chain reaction is possible, because1. More neutrons are related in each of the fission reaction2. The neutrons immediately take part in the fission process3. The fast neutrons are slowed down by graphite4. Every neutron released in the fission reaction initiates fission.Which of these statements are correct ?

Consider the following statements in a nuclear reactor, self sustained

1.	Consider the following statements in a nuclear reactor, self sustained chain reaction is possible, because 1. More neutrons are related in each of the fission reaction 2. The neutrons immediately take part in the fission process 3. The fast neutrons are slowed down by graphite 4. Every neutron released in the fission reaction initiates fission. Which of these statements are correct ?
A.	1, 2 and 3
B.	1 and 3
C.	2 and 4
D.	2, 3 and 4
Answer» B. 1 and 3

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