You are developing a C# application. The application includes the following code segment, (Line
numbers are included for reference only.)
The application fails at line 17 with the following error message: “An item with the same key has
already been added.”
You need to resolve the error.
Which code segment should you insert at line 16?
A.
Option A
B.
Option B
C.
Option C
D.
Option D
A
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ContainsKey(TKey)
Determines whether the Dictionary contains the specified key.
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We cant change foreach’s iterating list.
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