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Ques. 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?

Option 1. class MyDictionary : Dictionary<string, string>

Option 2. class MyDictionary : HashTable

Option 3. class MyDictionary : IDictionary

Option 4. class MyDictionary { ... } Dictionary<string, string> t = new Dictionary<string, string>(); MyDictionary dictionary = (MyDictionary)t;

Ans. Option 4

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