The region bounded by the curves y = x and y = 6- x and the x-axis is rotated about the x-axis for x2 0. The volume of the generated solid of revolution can be anyone or a combined sum of the integrals below. U. n(6 - x-x)*dx + (6-x)*dx A. R alone R. f, T(x*)'dx + f, x(6 x)dx B. Both Rand S s. fn[(x?)? (6 -x)*]dx C. U alone T. So 2ny(6 - y - Jy)dy D. Both R and T