单项选择题
(5) Hangzhou Bus Group ( ) A.
has sold 40,000 bicycles to citizens and visitors since May 2008. B.
used the public bikes an average of 100,000 times a day. C.
has saved 7,500 tons of oil and reduced CO2, emission by 23,897 tons in a year. D.
has set up 1,600 public bicycle rental stations with more than 40,000bicycles.