Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(f​g)(x) ​= nothing ​(Simplify your ​answer.) B. ​(f​g)(x) does not exist. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(f​g)(​) nothing ​(Simplify your​ answer.) B. The value for ​(f​g)(​) does not exist. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(x) ​= nothing ​(Simplify your ​answer.) B. ​(x) does not exist. Click to select and enter your answer(s) and then click Check Answer.