Which of the following integrals will determine the volume of the solid generated by revolving the region bounded by the curves y = 6x, y = x and y = 24 about the y-axis using the shell method? a) integral^24_0 2 pi x(24 - 5x) dx
b) integral^24_0 5/3 pi y^2 dy
c) integral^4_0 10 pi x^2 dx + integral^24_4 2 pi x(24 - x) dx integral^4_0 25 pi x^2 dx + integral^24_4 2 pi x(24 - x) dx
d) integral^4_0 25 pi x^2 dx + integral^24_4 pi (24 - x)^2 dx
e) integral^24_0 25 pi y^2/36 dy