Decide what values of the variable cannot possibly be solutions for the equation. Do not solve.
$$ \frac{1}{x-4} + \frac{1}{x+3} = \frac{1}{x^2-x-12}$$
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The solutions cannot include
(Type an integer or a fraction. Use a comma to separate answers as needed.)
B. There are no numbers that would have to be rejected as potential solutions.