You develop an application by using C#. The application counts the number of times a specific word appears
within a set of text files. The application includes the following code. (Line numbers are included for reference
only.)

You have the following requirements:
Populate the _wordCounts object with a list of words and the number of occurrences of each word.
Ensure that updates to the ConcurrentDictionary object can happen in parallel.
You need to complete the relevant code.
Which code segment should you insert at line 23?

A.
Option A

B.
Option B

C.
Option C

D.
Option D