Express each column vector of BB as a linear combination of the column vectors C, C2, and c3 of B. B = 3 0 4 6 -3 3 1 2 Enter first column as a linear combination of columns of B in terms of the vectors C, C2, and c3: X 21 c +8 c + 15 C3 Enter second column as a linear combination of columns of B in terms of the vectors C, C2, and c3: X 8 c + 13 c + 10 c3 Enter third column as a linear combination of columns of B in terms of the vectors C, C2, and c3: X 15 c + 10c + 40 c3