你好老师，我想请教一个问题：
—How can I get in touch with the travel agency，Robin?
—Just surf the Internet and then call one ________ the telephone number is provided.
A.with whichB.in whichC.of whichD.by which
参考答案是给的C。（one指代the travel agency，所以：The telephone number of the travel agency is provided.）
我的疑问是，为何不可以选D？（The telephone number is provided by the travel agency.）
感觉D也是对的，没任何问题。
很很感谢！！
假如你选by which, 那样the telephone number这个特指的电话是哪个的电话呢？
选of which, 则为the telephone number of the travel agency。
什么符合句义和语言逻辑，你一个人好好想想。
