In two different experiments, an object of mass $5 \mathrm{~kg}$ moving with a speed of $25 \mathrm{~ms}^{-1}$ hits two different walls and comes to rest within (i) 3 second, (ii) 5 seconds, respectively. Choose the correct option out of the following :

1. A Impulse and average force acting on the object will be same for both the cases.
2. B Impulse will be same for both the cases but the average force will be different. Correct answer
3. C Average force will be same for both the cases but the impulse will be different.
4. D Average force and impulse will be different for both the cases.