16 Let u= 12 and A= 10 4 -2 -2 6 Is u in the plane in R3 spanned by the columns of A? Why or why not? 1 1 Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or decimal for each matrix element.) OA. Yes, multiplying A by the vector writes u as a linear combination of the columns of A. B. No, the reduced echelon form of the augmented matrix is , which is an inconsistent system.