Find the vector equation and parametric equations for the line through the point (4, -7, 4) and parallel to the vector 1, 3, -2/3.
a) r(t) = <4, -7, 4> + t<1, 3, -2/3>
b) x = 4 + t, y = -7 + 3t, z = 4 - (2/3)t
c) r(t) = <4, -7, 4> + t<3, 1, -2/3>
d) x = 4 + 3t, y = -7 + t, z = 4 - (2/3)t