Find the coordinates of the points which trisect the segment joining the points $P(4,2,-6)$ and $ Q(10,-16,6)$

Question

$\begin{array}{1 1} (8,-10,2)\; and\; (6,-4,-2) \\ (8,10,2)\; and \;(6,-4,-2) \\(8,-10,2)\; and \;(6,4,-2) \\(8,-10,2)\; and \;(6,-4,2) \end{array} $