选择题中whenever,wherever,whatever,however的区别

问题描述

You can eat food free in my restaurant ______ you like.
A. whenever      B. wherever    C. whatever    D. however
答案为 B，可我觉得 A 才对，怎么解释 C 不对。谢谢!

老师答疑

王老师：

答案是错的，应该选 A，whenever 引导的时间状语从句。