複選題

Which of the following statements about the determinant is true?
(A) For any square matrix A, det = -det A.
(B) The determinant of the n x n identity matrix is .
(C) 'The deterrninant of an upper triangular mnatrix is always equal to the product of its
diagonal entries.
(D) Performing a row addition operation on a square matrix does not change its determinant.

(E) Performing a scaling operation on a square matrix does not change its determinant.