Answer:
Everything; A, B, C, and D.
Step-by-step explanation:
We have the equation:

Let's solve for x. On the left, distribute:

Distribute on the right:

Combine like terms on the left:

We can see that both the left- and right-hand side are equivalent.
Therefore, any and all values of x will satisfy our equation.
So, our answer is A, B, C, and D.
Or, picking any single one should be correct.