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Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
Which of the following statements must be true of the lengths of the segments on line m above?
I. AB+CD=AD
II. AB+BC=AD-CD
III. AC-AB=AD-CD
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III
