Which sentence uses and in took citation correctly according to the MLA standards?

A. According To Dr. Lisa Whey " moderation Is key to a successful diet " (Whey 271).

B. According to Dr. Lisa Whey (271), "moderation Is key to a successful diet."

C. According to Dr. Lisa Whey, "moderation is key to a successful diet" (Whey, 2015, 271).

D. According to Dr. Lisa Whey, "Moderation Is key to a successful diet" (271)