Consider the region R bounded by y = x and y=x". a) Set up but do not evaluate one or more integrals to find the volume of the solid obtained by rotating R about the x-axis using the disk washer method. b) Set up but do not evaluate one or more integrals to find the volume of the solid obtained by rotating R about the x-axis using the shell method. C) Set up but do not evaluate one or more integrals to find the volume of the solid obtained by rotating R about the line y = 2 using the disk washer method. d) Set up but do not evaluate one or more integrals to find the volume of the solid obtained by rotating R about the line y = 2 using the shell method