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A free particle of mass m was in motion ...

A free particle of mass m was in motion along the x-axis on a horizontal x-y plane kept at a fixed height above the earth. On sudden explosion, the particle broke up into two pieces of masses `(m)/(4) and (3m)/(4)`. After an interval of time, position of the smaller fragment along y-axis become y = 15 cm. At that moment, position of the larger piece was

A

y = -5 cm

B

y = + 20 cm

C

y = + 5 cm

D

y = - 20 cm

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