Which of the following for-loop headers results in equivalent numbers of iterations: A. for (int q = 1; q <= 100; q++) B. for (int q = 100; q >= 0; q--) C. for (int q = 99; q > 0; q -= 9) D. for (int q = 990; q > 0; q -= 90) a. A and B. b. C and D. c. A and B have equivalent iterations and C and D have equivalent iterations. d. None of the loops have equivalent iterations.