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