In listenin to the World -- Sharing Section, what are some of the reasons mentioned by the tourists against choosing London as a holiday destination?
选项：

A:It's too big a city, and doesn't have any real heart.
B:People there are too busy, indiffernt to the visitors.
C:It's too modern;there are not many old architecture.
D:People in London are not humorous, nor do they look friendly.