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)