Multiple choice technology programming languages

Which of the following is true:

  1. It is possible for a single class to implement multiple interfaces

  2. It is possible for a class to inherit from multiple classes

  3. It is possible for a class to inherit from a Sealed class

  4. All of above
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A Correct answer
Explanation

A class can implement multiple interfaces because interfaces only define contracts without implementation. Multiple inheritance from classes is not allowed in C# due to complexity and ambiguity issues (the diamond problem). Sealed classes explicitly prevent inheritance by design.

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