Formulas gravitational potential energy

Select the correct formula for gravitational potential energy,... 

The potential of the gravitational field cp = (Ulm) is numerically equal to the potential energy of the MP of a unit mass placed into a given point r therefore, (p(r) = —G(Mlr). Note that r is the distance to the body from the center of the earth this formula is valid for any spherically symmetric force s field. The relationship is also useful U r) = mcpif). This is the most general expression. 

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