3. We place a rie on a wooden board. The board is stationaryr and has i friction-free wheels. A heavy:r piece of wood is placed in front of the rie. We shoot in this block that accelerates and than, after a while, slows down and stops due to friction 1Illrith the board. Which of the following statements is true?' A} The board does not move, B] The moment is not preserved because of the frictional force. [C] The speed of the board is equal to zero immediater after the collision between the ball and black. D) The board changes its position relative to its starting point. E} Kinetic energy is conserved because of the velocity of the system which is equal to zero before and after the collision