(1 point) Set up a triple integral to find the mass of the solid tetrahedron bounded by the xy-plane, the yz-plane, the xz-plane, and the plane x/5 + y/4 + z/20 = 1, if the density function is given by δ(x, y, z) = x + y. Write an iterated integral in the form below to find the mass of the solid. f(x,y,z)dV dz dy da JA Jc JE with limits of integration A= B= C= D= E= F=