In the picture below, a boy is trying to pull a dog on a leash, but the dog and the boy are moving in the same direction. Which of the following best describes the forces in this situation?
A The forces are balanced, and the net force is zero.
B The forces are unbalanced, and the boy’s force is greater.
C The forces are unbalanced, and the dog’s force is greater.
D The forces are balanced, and the dog is stronger than the boy.