Which statement is a hypothesis these students might be using in their experiment? O A. If a toy car is rolled down ramps of different steepness, it will roll fastest on the steepest ramp. O B. It's fun to see how fast the cars roll down the steepest ramps. O C. Will a toy car roll faster down a steeper ramp? D. This experiment tests how the speed of a toy car changes with the steepness of the ramp.​