What is the relationship between trees, slot diagrams, and the fundamental counting principle?

Choose the correct answer below.

A$.$ Tree diagrams show where the branches split, slot diagrams count the total number of branches, and the fundamental counting principal is used to calculate the number of branches in the last step.

B$.$ Tree diagrams show all the branches, slot diagrams counts the branches at each step, and the fundamental counting principal is used to calculate the total number of branches.

C$.$ Tree diagrams illustrate the divisions horizontally, slot diagrams illustrate the divisions vertically, and the fundamental counting principal multiplies the branches from the tree diagram with the numbers in the slot diagram to calculate the total number of branches.

D$.$ There is no relationship.