Let A be a 4x4 diagonalizable matrix. Which of these are always true about A? (1) A is similar to a diagonalizable matrix (II) All the eigenvalues of A are not equal to 0. (III) The set of all eigenvectors of A spans R¹. A. Only (1) and (III). B. Only (I) and (II). C. Only (I). E. None of these. All of (1), (II) and (III).