A system of two bodies of masses ‘m’ and M being interconnected by a spring of stiffness k , in its natural length , moves towards a rigid wall on a smooth horizontal surface as shown in figure with a K.E. system ‘E’ . If the body M sticks to the wall after the collision , the maximum compression of the springs will be : A) √(𝑚𝐸/𝑀𝑘) B) √(2𝑚𝐸/(𝑀+𝑚)𝑘) C) √((2(𝑚+𝑀)𝐸)/𝑘(𝑚) ) D) √(2𝑀𝐸/(𝑀+𝑚)𝑘)