【单选题】

An average of 82.4% of domestic travelers went on sightseeing tours during this year, an increase of 8.7% compared with the previous year.

A．全年国内居民出游率达52.4%，增至去年的8.7%。

B．全年国内居民出游率达52.4%，比上一年增长了8.7%。
C．全年来中国境内旅游达到52.4%，比上一年增长了8.7%。
D．大约有52.4%的国内居民选择在今年观光旅游，是上一年的8.7$。