you need to write a multicast delegate that accepts datetime argument..., Basic, Microsoft .NET Framework

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Question:You need to write a multicast delegate that accepts a DateTime argument. Which code segment should you use?

A public delegate void PowerDeviceOn(DateTime autoPowerOff); 
B public delegate bool PowerDeviceOn(DateTime autoPowerOff); 
C public delegate int PowerDeviceOn(bool result, 
DateTime autoPowerOff); 
D public delegate bool PowerDeviceOn(object sender, 
EventArgs autoPowerOff);

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Question:You need to write a multicast delegate that accepts a DateTime argument. Which code segment should you use?

A public delegate void PowerDeviceOn(DateTime autoPowerOff);

B public delegate bool PowerDeviceOn(DateTime autoPowerOff);

C public delegate int PowerDeviceOn(bool result, DateTime autoPowerOff);

D public delegate bool PowerDeviceOn(object sender, EventArgs autoPowerOff);

A

C public delegate int PowerDeviceOn(bool result,
DateTime autoPowerOff);

D public delegate bool PowerDeviceOn(object sender,
EventArgs autoPowerOff);