Read the following context and choose the best option to answer the question.
Context: I miss you , the friend that cared about me more than anyone else seemed to , the friend who looked after me , who respected me so much , who I felt so comfortable with . I counted you among one of my closest friends , despite the fact we live far apart . We understood each other so well , we could talk for hours and never run out of things to say .
Question: Why is the speaker able to speak without running out of things to say .
Options: 
A. None of the above choices .
B. Because they are nervous and ca n't stop talking .
C. Because their best friend understands them so well .
D. Because they have verbal diarrhea .


C