[Solved] Which of the following is a key reason to choose an interface over an abstract class in C#? - Ans: You want to define a contract without any implementation details. | C Sharp (C#)

C Sharp (C#) - Interfaces

Which of the following is a key reason to choose an interface over an abstract class in C#?

AYou want to define a contract without any implementation details.

BYou want to provide default method implementations.

CYou want to restrict inheritance to a single class.

DYou want to store state in fields.

Step-by-Step Solution

Solution:

Step 1: Understand interface purpose
An interface defines a contract with no implementation, focusing on what methods a class must have.
Step 2: Compare with abstract class features
Abstract classes can provide default implementations and hold state, unlike interfaces.
Final Answer:
You want to define a contract without any implementation details. -> Option A
Quick Check:
Interface = Contract only [OK]

Quick Trick: Interface = contract only, no code or state [OK]

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Which of the following is a key reason to choose an interface over an abstract class in C#?