Question: 2 0 . Which is / are correct statement ( s ) about the TreeSet? ( Choose all that apply ) TreeSet allows duplicate element

20. Which is/are correct statement(s) about the TreeSet? (Choose all that apply)
TreeSet allows duplicate element(s).
TreeSet allows exact one generic data type.
TreeSet allows to sort elements.
The generic data type of TreeSet must be Comparable type.

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