Let A = = (b) Let B = (c) Let C 2 33 Null(A) is a subspace of R* where k = Col(A) is a subspace of Rk where k = = 4 6 6 -5 -10 4 -7 30 7 Row (B) is a subspace of Rk where k = Null(B) is a subspace of R* where k = Then: 6 3 0 3 0 -4 0 -4 6 -4 6 3 Then: Col(C) is a subspace of Rk where k= Then: Row (C) is a subspace of RK where k =