Read each question. Then write the letter of the correct answer on your paper.
Which sum is equal to x²+4 x-3 / x²-9 ?
(A) 1 / x-3 + x / x+3
(B) x-3 / x+3 + x-1 / x-3
(C) x² / x-3 + 4 x-3 / x+3
(D) 1 / x+3 + x / x-3