Read the following context and choose the best option to answer the question.
Context: He sold it to me because he already had four bikes and wanted to buy a BMW . I bought this bike from him with just under 2000 miles . I had to replace the battery after I bought it because he hardly ever rode it . I rode this bike as a sport tourer all last year .
Question: What may be the reason for them buying a bike ?
Options: 
A. They needed their own vehicle .
B. None of the above choices .
C. They needed transportation .
D. They wanted to use it for touring .


D