(6 points) What is the volume of the solid obtained by rotating the region bounded by y=2,x=0 and y=4 about the line y=47 1. The integral expressing the volume using the shell method is: A. None of these B. 2 y√√y dy C. 2 (4-3)√ dy D. 2 yydy E. 2 (4-3)√9 dy Jo 2. The integral expressing the volume using the washer method is: A. None of these B.T(4-2)²dz C. (4-(2)²)dz D. (4-2)²dz E. (4-(2)2)dz