Solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the original logarithmic expressions. Give the exact answer. In (x-5)+ In (x+4)= In (x-21) Rewrite the given equation without logarithms. Do not solve for x. (x-5)(x+4)=(x-21) Solve the equation to find the solution set. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The solution set is (Simplify your answer. Use a comma to separate answers as needed.) OB. There are infinitely many solutions. OC. There is no solution.