Thanks for participating The correct answer is C.pic.twitter.comVQ1sAGr9pf

Thanks for participating! The correct answer is C.pic.twitter.com/VQ1sAGr9pf

15:54 EST 20 Jan 2019 | Merck & Co., Inc.

Thanks for participating! The correct answer is C. pic.twitter.com/VQ1sAGr9pf

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