A Toy Car and a Toy Truck at Rest Have

Multiple Choice

A toy car and a toy truck at rest have a compressed spring in between them. The truck has more mass than the car. The spring is released and the two cars move in opposite directions. Which of the following is true?

A) The magnitude of the truck's momentum is the same as the car's.
B) The magnitude of the truck's momentum is larger than the car's.
C) The magnitude of the truck's momentum is smaller than the car's.
D) It is not possible to tell which has more momentum without knowing the speeds.