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Question:You are writing a custom dictionary. The custom-dictionary class is named MyDictionary. You need to ensure that the dictionary is type safe. Which code segment should you use?

A public ref class MyDictionary : public IDictionary{}; 
B public ref class MyDictionary : public Dictionary<String=, String=>{}; 
C public ref class MyDictionary : public Hashtable{}; 
D public ref class MyDictionary{}; 
Dictionary<String=, String=> t = gcnew Dictionary<String=, String=>(); MyDictionary dictionary = (MyDictionary)t;

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Question:You are writing a custom dictionary. The custom-dictionary class is named MyDictionary. You need to ensure that the dictionary is type safe. Which code segment should you use?

A public ref class MyDictionary : public IDictionary{};

B public ref class MyDictionary : public Dictionary<String=, String=>{};

C public ref class MyDictionary : public Hashtable{};

D public ref class MyDictionary{}; Dictionary<String=, String=> t = gcnew Dictionary<String=, String=>(); MyDictionary dictionary = (MyDictionary)t;

B

D public ref class MyDictionary{};
Dictionary<String=, String=> t = gcnew Dictionary<String=, String=>(); MyDictionary dictionary = (MyDictionary)t;