Question in-201

3.3 Transitions - Sequence/time transitions (first, then)
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In 2018, Kurt Luther and Vikram Mohanty created the web-based tool Civil War Photo Sleuth (CWPS). A user uploading an unknown Civil War soldier’s photograph to CWPS first tags the photo with all known information. blank CWPS’s facial-recognition software analyzes twenty-seven different physical features and looks for matches to tagged images already in the database.

Which choice completes the text with the most logical transition?

A.

Then, 

B.

In fact,

C.

Likewise,

D.

For example,