A hammer weighing 2.5 kg moving with a speed of \[1\text{ }m\text{ }{{s}^{-1}}\] strikes the head of the nail driving it 10 cm into the wall. The acceleration during impact and the impulse imparted to wall will be respectively

• A. \[-5m\text{ }{{s}^{-2}},\text{ }2.5\text{ }N\text{ }s\]
• B. \[-\text{ }10\text{ }m\text{ }{{s}^{-2}},\text{ }5\text{ }N\text{ }s\]
• C. \[-\text{ }7.5\text{ }m\text{ }{{s}^{-2}},\text{ }3.5\text{ }N\text{ }s\]
• D.  \[-6m\text{ }{{s}^{-2}},\text{ }4\text{ }N\text{ }s\]