书名：youtube
页数：https://www.youtube.com/watch?v=KH7Df1g4cms 111.
题目：A buffet dinner is availalbe to the guests,so they may eat ____
looks appetizing to them without having to place an order.
(A) anyway
(B) whatever
(C) wherever
(D) anything
答案是B
疑问：写的时候B和D在考虑，想请问下应该如何分别whatever 跟 anything的用法呢？