Ms. Carr asks her students to read any 5 of the 10 books on a reading list. Harold randomly selects 5 books from this list, and Betty does the same. What is the probability that there are exactly 2 books that they both select?

**Answer Choices**

A. \dfrac{1}{8}

B. \dfrac{5}{36}

C. \dfrac{14}{45}

D. \dfrac{25}{63}

E. \dfrac{1}{2}