A spring of force constant `600 Nm^(-1)` is mounted on a horizontal table. A mass of 1.5 kg is attached to the free end of the spring, pulled sideways to a distance of 2 cm and released .P.E. of the mass when it momentarily comes to rest and total energy are
A. `0.12 J , 0`
B. ` 0,0.12 J`
C. `0,0`
D. ` 0.12 J , 0.12J`