Which of the following is the correct way to implement a read only property Length in a Sample class?

[A].	class Sample { int len; public int Length { get { return len; } } }
[B].	class Sample { public int Length { get { return Length; } } }
[C].	class Sample { int len; public int Length { get { return len; } set { len = value; } } }
[D].	class Sample { int len; public int Length { Readonly get { return len; } } }

Answer: Option A

Explanation:

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