The velocity-time graph shows the motion of a particle moving in a straight line. What may be deduced about the resultant force acting on the particle during the first 2 s and after 2 s?
| First 2 s | After 2 s | |
| A | Constant | Zero |
| B | Increasing at a Constant rate | constant |
| C | constant | Increasing at a constant rate |
| D | Increasing at a Zero rate | constant |