If the solution of the equations x + y = 10 and x - y = 2 corresponds to the equations 2x + 2y = 20 and 2x - 2y = 4, what is the corresponding solution for the equations 3x + 3y = 30 and 3x - 3y = 6?
Answer: B. (6, 4)
The solutions maintain the same relationship as the original equations, scaled by a factor of 3.