Which of the following situations best illustrates a "false positive" in the performance of a spam filter?

Which of the following situations best illustrates a "false positive" in the performance of a spam filter?
A . The spam filter removed Incoming communication that included certain keywords and domains.
B. The spam filter deleted commercial ads automatically, as they were recognized as unwanted.
C. The spam filter routed to the "junk|r folder a newsletter that appeared to include links to fake websites.
D. The spam filter blocked a fitness club gift card that coworkers sent to an employee for her birthday.

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Answer: D