Which is Incorrect About Velocity :

Which one of the following statements is not correct?

1. If the velocity and acceleration have opposite sign,, the object is slowing down
2. If the velocity is zero at an instant, the acceleration should also be zero at that instant
3. If the velocity is zero for a time interval; the acceleration is zero at any instant within the time interval
4. If the position and velocity have opposite sign, the object is moving towards the origin