Which of the following best compares a fission reaction and a fusion reaction?
A.Both reactions absorb energy; in a fission reaction, two smaller atoms combine to form one larger atom, while in a fusion reaction, one large atom splits into smaller atoms.
B.Both reactions absorb energy; in a fission reaction, one atom splits into two smaller atoms, while in a fusion reaction, two smaller atoms combine to form one larger atom. C.Both reactions release energy; in a fission reaction, two smaller atoms combine to form one larger atom, while in a fusion reaction, one large atom splits into smaller atoms.
D.Both reactions release energy; in a fission reaction, one atom splits into two smaller atoms, while in a fusion reaction, two smaller atoms combine to form one larger atom.