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单选题
You need to store elements in a collection that guarantees that no duplicates are stored and all elements can be accessed in natural order. Which interface provides that capability？（）
A
Java.util.Map.
B
Java.util.Set.
C
Java.util.List.
D
Java.util.StoredSet.
E
Java.util.StoredMap.
F
Java.util.Collection.
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