Which of the following sentences contains a oxymoron?

A. Standing in front of the entire class, Owen begins to read his paper about The Great Gatsby.

B. Mrs. Kitts announced, “I would like you all to write a detailed summary about the book.”

C. The class began reading The Tempest by William Shakespeare at the beginning of the year.

D. “How should we format our summary? Should it be typed?” Asked Time after raising his hand.