Please explain and show work ( I WILL MARK BRAINLIEST)

Answer:
C) 2
Step-by-step explanation:
If you make h be 2, the equation will be equal to itself, creating infinite solutions.
6x + 18 = h(3x + 9)
6x + 18 = 2(3x + 9)
6x + 18 = 6x + 18
-6x - 18 -6x - 18
0 = 0
If this answer is correct, please make me Brainliest!