(Java) In which of these cases would it be good to use an enum ?   Group of answer choices   1. You want a variable where there is flexibility to allow users to input an arbitrary string containing only a single word (i.e. no spaces). 2. You need to have a variable that encodes which day of the week it is. 3. You need to have a variable for a person’s birthday. 4. You need to output all possible integers between 1 and n, where n is input by the user.

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