(a) For any 4 x 3 matrix A, what is the column 3 of AB? Write down all components in the column 3 of I AB, and explain your answer. (b) For any 3 x 2 matrix C, what is the row 2 of BC? Write down all components in the row 2 of BC. Explain your answer. (e) Is it possible to find a 3 x 3 matrix D such that DB 13, the 3 x 3 identity matrix? Explain your answer. 13, the 3 x 3 identity matrix? Explain your (d) Is it possible to find a 3 x 3 matrix F such that BF answer. [110] Let B=0 00 3 3 0