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During lunch in the company's cafeteria, McKenzie overheard her coworker, Abby, tell Kyle that she has a job interview with another firm next week. To respect Abby's privacy, McKenzie should
A. promise Kyle that she will not tell anyone about his conversation with Abby.
B. drop vague hints to her supervisor that Abby is unhappy and looking for another job.
C. keep the information to herself and not say anything to anyone.
D. tell Abby that she overheard the conversation, and assure Abby that her secret is safe.