Solve.

$\frac{9}{x^2-5x}-\frac{3}{x}=\frac{7}{x-5}$

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A$.x=$

$($Type an integer or a simplified fraction. Use a comma to separate answers as needed.$)$

B$.$ The solution is all real numbers.

C$.$ There is no solution.