A bond with elements from B.
It has to due with numbers so I would say the last one!
There are many forms of energy, but they can all be put into two categories: kinetic and potential. Kinetic energy is motion––of waves, electrons, atoms, molecules, substances, and objects. Potential energy is stored energy and the energy of position––gravitational energy
The answer is Monocline. And I checked it, it's correct.
