Which Produces More Energy,the Fissioning of a Single Uranium Nucleus

Which produces more energy,the fissioning of a single uranium nucleus or the fusing of a pair of deuterium nuclei? Why?

A) Fusing a pair of deuterium nuclei produces more energy because,unlike fission,there is no radioactive waste product.
B) Fissioning a single uranium nucleus produces more energy since its mass is much greater than that of a pair of deuterium nuclei.
C) Both the fissioning of a single uranium nucleus and the fusing of a pair of deuterium nuclei produce the same amount of energy since the resulting products are the same.
D) Neither the fissioning of a single uranium nucleus nor the fusing of a pair of deuterium nuclei produce any net amount of energy.On the contrary,both processes require more energy than they produce.