Suppose A is a 3x3 matrix with columns v1, Ú2, Ú3 satisfying the following conditions: (i) {U1, 72, 3} is an orthogonal set. (ii) 7ị · ở1 = 3, v2 · 72 = 5, and v3 · 03 = 2, %3D Which of the following statements is true? O det(A) = 0 O A' A is a diagonal matrix. A is symmetric. O A-1 = AT

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