下列不属于非平凡函数依赖的是______。

A．(CustomerID，ProviderID，BuyDate)→GoodsName
B．(CustomerID，ProviderID，BuyDate)→GoodsName，ProviderID
C．(CustomerID，ProviderID，BuyDare)→GoodsClassID
D．(CustomerID，ProvideIID，BuyDate)→ProviderID