听力原文： Car Buyers magazine's automobile reliability survey reached a milestone this year: more than 6 million people responded to our survey. This is the highest number of responses we've ever received and reinforces our standing as the most authoritative source for information about new automobiles. The survey asks consumers about any problems they've had with their car in the past year. The results are sure to open some eyes. Of the 30 cars that received top rating, 29 were . Japanese. That means people purchasing Japanese-vehicles had the fewest complaints, a detail that is Jikely to catch the attention of auto makers in Europe and the U.S.
Who conducted the survey？

A magazine
B. A university
C. A marketing firm
D. An automobile manufacturer