Determine if the following vectors are orthogonal. - 5 1 - 7 V = 7 u = 15 - 2 Are the two vectors orthogonal? (Type an integer or a fraction.) O A. The vectors u and v are not orthogonal because u + v = O B. The vectors u and v are orthogonal because u•v = O C. The vectors u and v are not orthogonal because u•v = O D. The vectors u and v are orthogonal because u + v =

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