您需要编写可接受日期时间参数并返回一个布尔值,多路广播的委托。您应该使用哪个代码段?()

A.public delegate int PowerDeviceOn(bool, DateTime);

B.public delegate bool PowerDeviceOn(Object, EventArgs);

C.public delegate void PowerDeviceOn(DateTime);

D.public delegate bool PowerDeviceOn(DateTime);