The volume of the tetrahedron ABCD with vertices A(x1, y1, z1), B(x2, y2, z2), C(x3, y3, z3) and D(x4, y4, z4) is
V = (1/6)|((x1,y1,z1,1),(x2,y2,z2,1),(x3,y3,z3,1),(x4,y4,z4,1))|
The volume of a tetrahedron with vertices (0, 0, 0), (2, 0, 0), (0, 3, 0) and (0, 0, 4) is
(a) 1
(b) 4
(c) 6
(d) 2
