Which of these is a correct statement? A. The equation 3 – x + 4 = –x + 7 has no solutions.

B. The equation x – 2 = 15x + 8 – 9x has one solution.

C. The equation 4x + 5 + 8x = 25 + 2x has two solutions.

D. The equation 9 + 3x – 1 = 10 + 3x has an infinite number of solutions.