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Which consequence results when a reactor's poisoning increases?

A)Lower neutron moderation efficiency occurs
B)Increased operational safety coefficient arises
C)A decreased reaction activation barrier
D)Reactor period becomes more negative

💡 Explanation

Neutron "poisoning" increases neutron absorption; therefore, the reactor period becomes more negative due to the increased neutron flux decay governed by reactor kinetics rate constants rather than moderation, safety, or kinetic barriers.

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