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Which of the following statements are true? [] Unions are potentially unsafe constructs [] Free unions use type indicators called tags [] Unions can be

Which of the following statements are true?

[] Unions are potentially unsafe constructs

[] Free unions use type indicators called tags

[] Unions can be used to create aliases

[] Unions are not included in C#

This is the answer I think is right, but I am not sure about the second option as well.

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