There are two types of nuclear reactions that can release energy. In the first, smaller atoms combine to make a larger atom; and in the second, a large atom is split into fragments. Which of the following about the two types of reactions is true?
A) Both types of reaction are forms of nuclear fusion.
B) Both types of reaction are forms of nuclear fission.
C) The first is nuclear fusion, and the second is nuclear fission.
D) The first is nuclear fission, and the second is nuclear fusion.
C
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