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單項選擇題

public class Person { 
private name; 
public Person(String name) { 
this.name = name; 
} 
public int hashCode() { 
return 420; 
} 
} 
Which is true?() 

A. The time to find the value from HashMap with a Person key depends on the size of the map.
B. Deleting a Person key from a HashMap will delete all map entries for all keys of typePerson.
C. Inserting a second Person object into a HashSet will cause the first Person object to beremoved as a duplicate.
D. The time to determine whether a Person object is contained in a HashSet is constant and does NOT depend on the size of the map.

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