HKD1710 wrote:
The company has built a new tool — being tested in Europe and slated to be rolled out more widely this year in a variety of different countries —letting people see the different ads placed by political pages, which is a move meant to address influence campaigns like those seen in the 2016 U.S. presidential election.
(A) letting people see the different ads placed by political pages, which is a move
(B) that let people see the different ads being placed by political pages, and it is a move
(C)
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