A body is of mass 1 kg falls freely from a height of 100 m. on a platform of mass 3 kg which is mounted on a spring having spring constant `k=1.25 xx 10 ^6 N//m`.The body sticks to the platform and the spring's maximum compression is found to be x .Given that `g=10 ms ^-2` ,the value of x will be close to :
A
40 cm
B
4 cm
C
80 cm
D
8 cm
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