Solve |6x + 36| = 12x. Identify the solution and an extraneous solution.
 A. Solution: x = -2;
 extraneous solution: 2 = 6
 B. Solution: 2 = 6;
 extraneous solution: 2 = -2
 C. Solution: x = 2;
 extraneous solution: x = -6
 D. Solution: x = 6;
 extraneous solution: x = -6