Gravitation

The correct option is (B):is conservative

The gravitational field at a point in space is defined as the gravitational force experienced by a small test mass placed at that point, divided by the magnitude of the test mass. Therefore, the gravitational field is the force per unit mass. Its units are Newtons per kilogram (N/kg), which is equivalent to meters per second squared (m/s ), the unit of acceleration. This is why it is also called the acceleration due to gravity.