Read the following context and choose the best option to answer the question.
Context: Today I met a guy I had seen practising martial arts a month or so ago ... he was working with a bokken etc . I was interested in his style but did n't have time to talk to him . Today I was riding my bike when I recognized him and I started talking to him . He is a student of Aikido and apparently quite good at it . We spoke about martial arts and the various forms of philosophy behind it .
Question: Why did the speaker stop to speak to the man ?
Options: 
A. He was interested in discussing philosophy .
B. He was interested in his bike .
C. None of the above choices .
D. He was interested in his martial arts practice .


D