Read the following context and choose the best option to answer the question.
Context: H - D Image of the Day - Today 's image comes from of course , the Harley - Davison 105th Anniversary Parade . Thousands of people lined Wisconsin Ave . and Milwaukee St. to greet and thank over 7500 riders from all over the world for visiting Milwaukee . As for the parade a separate slideshow has been set - up with 105 images .
Question: What may be true about the riders ?
Options: 
A. They all ride bicycles .
B. They all drive vans .
C. They all own vintage cars .
D. They all own motorcycles .


D