A body of mass \(100 \mathrm{~g}\) moves with a velocity of \(10.0 \mathrm{~ms}^{-1}\) and collides with a wall.
After the collision, the body moves with a velocity of \(2.0 \mathrm{~ms}^{-1}\) in the opposite direction. The change in momentum is ____________

A. \(8.0 \mathrm{Ns}\)
B. \(1.2 \mathrm{Ns}\)  
C. \(12.0 \mathrm{Ns}\)
D. \(80 \mathrm{Ns}\)

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Correct Answer: B