An aeroplane flying at a constant velocity releases a bomb. As the bomb drops down from the aeroplane.

It will always be vertically below the aeroplane

It will gradually fall behind the aeroplane if the aeroplane is flying horizontally

It will always be vertically below the aeroplane only if the aeroplane is flying horizontally

It will always be vertically below the aeroplane only if the aeroplane is flying at an angle of ${\text{45}}^{\circ }$ to the horizontally