18 5 -7 Let u = - 12 and A = - 4 8 Is u in the plane in R° 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....

Extracted text: 18 5 -7 Let u = - 12 and A = - 4 8 Is u in the plane in R° 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.) O A. No, the reduced row echelon form of the augmented matrix is which is an inconsistent system. OB. Yes, multiplying A by the vector writes u as a linear combination of the columns of A. 1 Click to select and enter your answer(s).