A system comprises of two small spheres with the same masses `m`. initially, the spring is non deformed. the spheres set in motion in a gravity space at the velocities as shown in the diagram.
The maximum elastic potential energy stored in the system is
A. `(mv_(0)^(2))/(2sqrt(2))`
B. `mv_(0)^(2)`
C. `(1)/(2)mv_(0)^(2)`
D. `2mv_(0)^(2)`