Which of the following subsets of R3X3 are subspaces of R³×³? A. The invertible 3 x 3 matrices B. The 3 x 3 matrices with trace 0 (the trace of a matrix is the sum of its diagonal entries) C. The 3 x 3 matrices of determinant 2 D. The 3 x 3 matrices A such that A 4 0-0 7 E. The non-invertible 3 x 3 matrices F. The diagonal 3 x 3 matrices

Select all statements below which are true for all invertible n x n matrices A and B DA. AB = BA OB. (A + B)(A - B) = A² - B² Oc. (A+ A-¹)² = A²+ A-² OD. A³B2 is invertible OE. A + B is invertible OF. (In + A) (In + A-¹) = 2In + A+ A-¹