Let A(0, 6, 8) and B(6, 12, 0) be two given points and  $P\left(a,0,0\right)$  be a point on x–axis such that PA+PB is minimum, then which of the following is/are true?

Perpendicular distance from the point A to the plane containing the points P, Q, B is 8 units

$If point Q is on the y–axis such that QA+QB is minimum then area of \Delta POQ is \frac{90}{7} uni{t}^2 where O is origin$

The volume of tetrahedron OPAB (where O is origin) is $\frac{240}{11}$ $uni{t}^3$

The volume of tetrahedron OPAB (where O is origin) is $\frac{480}{11}{\text{\hspace{0.17em}unit}}^3$