The integral represents the volume of a solid. Describe the solid. 2π 4 1 y + 4 y2 dy The solid is obtained by rotating the region 0 ≤ x ≤ 2π/y2, 1 ≤ y ≤ 4 about the line y = −4 using cylindrical shells. The solid is obtained by rotating the region 0 ≤ x ≤ (y + 4)/y2, 1 ≤ y ≤ 4 about the line y = 0 using cylindrical shells. The solid is obtained by rotating the region 0 ≤ x ≤ (y + 4)/y, 1 ≤ y ≤ 4 about the line y = 0 using cylindrical shells. The solid is obtained by rotating the region 0 ≤ x ≤ 1/y2, 1 ≤ y ≤ 2 about the line y = −4 using cylindrical shells. The solid is obtained by rotating the region 0 ≤ x ≤ 1/y2, 1 ≤ y ≤ 4 about the line y = −4 using cylindrical shells. Show My Work (Optional)