I need reassurance my answer is 5, but I'm not too sure yet because 1/5 is an option. how do I tell the difference and how how I know?

Let's begin by listing out the given information:
Triangle ABC is similar to Triangle XYZ. However, Triangle ABC is larger than Triangle XYZ
We will see the ratio by comparing the corresponding sides of both triangles. We have:
[tex]\begin{gathered} \frac{|AB|}{|XY|}=\frac{|AC|}{|XZ|}=\frac{|BC|}{|YZ|} \\ \Rightarrow\frac{45}{9}=\frac{35}{7}=\frac{60}{12}=5 \\ \Rightarrow Triangle\text{ }ABC=5times\text{ }Triangle\text{ }XYZ \end{gathered}[/tex]From Triangle ABC to Triangle XYZ, observe that the size of the Triangle XYZ is smaller. That shows us that Triangle XYZ is one-fifth of Triangle ABC
Hence, the correct answer is 1/5 (option D)