Term ‘Visible Horizon’ in astronomy is defined as:-

A) The circle of contact of the earth and the cone of visual rays passing through the meridian of the place.

B) The circle of contact of the earth and the cone of visual rays not passing through the meridian of the place.

C) The circle of contact of the earth and the cone of visual rays passing through the point of observation.

D) The circle of contact of the earth and the cone of visual rays not passing through the point of observation.