For a two body system in absence of external forces, the kinetic energy as measured from ground frame is 𝐾_0 and from centre of mass frame is 𝐾_𝐶𝑀. Pick up the CORRECT statement. 1. The kinetic energy as measured from center of mass frame is least 2. Only the portion of energy 𝐾_𝐶𝑀 can be transferred from one form to another due to internal changes in the system. 3. The system always retains at least 𝐾_0- 𝐾_𝐶𝑀 amount of kinetic energy as measured from ground frame irrespective of any kind of internal changes in the system. 4. The system always retains at least K c m 𝐾 𝑐 𝑚 amount of kinetic energy as measured from ground frame irrespective of any kind of internal changes in the system.