Can someone please explain it to me why my answer is wrong???!!! Where I'm doing wrong please could tell me??!! ASAP?!!

Let R be the region bounded by the following curves. Use the shell method to find the volume of the solid generated when R is revolved about the x-axis. y =5 - x, y = 1, and x = 0 a 10 . . . . . Set up the integral that gives the volume of the solid. Use increasing limits of integration. Select the correct choice below and fill in the answer boxes to complete your choice. (Type an exact answer.) OA. J ( )dy 5 O B. It (x2 -5x+ 1) dx 0