The Toyota Case at the End of the Chapter Describes

The Toyota case at the end of the chapter describes how Toyota goes after tuners. What are "tuners"?

A) consumers that are tuned in to current trends in their age demographic
B) older consumers who "dance to their own tune," meaning they are not influenced by others when making consumption decisions
C) younger consumers who "dance to their own tune," meaning they are not influenced by others when making consumption decisions
D) young car buyers who live to customize their cars
E) opinion leaders who have an unusual influence on young car buyers