Solve the following equation by making an appropriate substitution. 8x-23x-3-0 Make an appropriate substitution and rewrite the equation in quadratic form. Let uthen the quadratic equation in u is Solve the equation. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The solution set is O B. The solution set is the empty set. (Type an integer or a simplified fraction. Use a comma to separate answers as needed.)