A body falling from rest under gravity passes a certain point $P$. It was at a distance of 400 m from $P$, $4$ s prior to passing through $P$. If $g = 10$ m/s$^2$, then the height above the point P from where the body began to fall is\\
(1) 720 m\\
(2) 900 m\\
(3) 320 m\\
(4) 680 m