There is no specific rule__________what we should wear to a dinn

There is no specific rule__________what we should wear to a dinner party.
A、because of
B、as to
C、as of
D、but for
【正确答案】：B
【题目解析】：【考情点拨】考查词组词义辨析。【应试指导】句意：至于出席宴会我们应该穿什么样的服装并没有具体的规定。because of因为；as t0关于，至于；as of从……开始；but for若不是。