Answer: B. Total mechanic energy
An inelastic collision is a form of collision where kinetic energy is lost and linear momentum is conserved. Inelastic collision, however, both kinetic energy and momentum are conserved. In an inelastic collision, the kinetic energy present is transferred to something else in the form of sound energy, thermal energy, and deformation of the material. In summary, the kinetic energy lost in an inelastic collision is in no way lost; rather, this energy is conserved into other forms of energy and this is as a result of internal friction. Inelastic collision does not obey the law of conversation of momentum