Which Situation Has More Energy, a ² H Nucleus, or a Separated

Which situation has more energy, a ² H nucleus, or a separated proton and neutron?

A) They both have the same energy, because energy is always conserved in any physical process.
B) A separated proton and neutron, because work is required to put a ² H nucleus together.
C) A ² H nucleus, because work is required to put it together beginning from a separated proton and neutron.
D) A separated proton and neutron has more energy, because work is required to pull a ² H nucleus apart.
E) A ² H nucleus, because work is required to pull a ² H nucleus apart.