will do, because i like both of them

_________will do, because i like both of them.
A.Both B.Neither C.Either D.Nor
已知正确答案是C，求指点理由，谢谢

BOTH用在句首，习惯用法是个短语形式。
可以单独使用（相当于名词），也可以构成“both of + 其他限定词 + 名词（复数）”或“both of + 代词”结构。
Both are my good friends.
Both of the boys over there are my good friends.
Both of them are my good friends.

b