Use the graphs of the functions to solve the problem x x 4 g x 6 a f x g x b f x g x c f x g x 12 Xxx 6 0 6 1 12 N a Solve f x g x Select the correct choice below and if necessary fill in the answer box to complete your answer OA The solution set is x Simplify your answer Type a compound inequality O B The solution set is x x or x Simplify your answer Type inequalities OC The solution set is Simplify your answer Use a comma to separate answers as needed O D The solution set is the empty set b Solve f x g x Select the correct choice below and if necessary fill in the answer box to complete your answer