想请问大家这道题目
It really doesn’t matter whether there is only coffee or tea.
______ will do.
(A. Any B. Either C. Both D. Anything)
答案是B. Either
C选项为什么不行呢
题目只给了解答没有详解，来这边请教！！

both：两个“一起”

either coffee or teaboth coffee and tea