Which one of the following is an example for Clathrate hydrate?

1.	Which one of the following is an example for Clathrate hydrate?
Answer» `CuSO_(4).5H_(2)O` `Na_(2)CO_(3).10H_(2)O` `CH_(4).20H_(2)O` `FeSO_(4).7H_(2)O` Answer :c

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