Which of the following are correct ways to specify the targets for a custom attribute?

[A].	By applying AttributeUsage to the custom attribute's class definition.
[B].	By applying UsageAttribute to the custom attribute's class definition.
[C].	Once an attribute is declared it applies to all the targets.
[D].	By applying AttributeUsageAttribute to the custom attribute's class definition.
[E].	None of the above.

Answer: Option D

Explanation:

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