Let u 2 3 3 and A 6 8 16 12 2 23 5 01 Is u in the subset of R3 spanned by the columns of A Why or why not 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 echelon form of the augmented matrix is which is an inconsistent system B Yes multiplying A by the vector writes u as a linear combination of the columns of A