Wille. how does this quotation support the central idea of the speech?

11.   Which one of these sentences contains a prepositional phrase?  

 A. Where did you find the papers that I lost?

 B. To be, or not to be: that is the question.

 C. You may think otherwise, but what I tell you is true.

 D. Trolls live under bridges; elves do not.

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