The gravitational potential energy of a body of mass ?m? at the earth?s surface \[-mg{{R}_{e}}\]. Its gravitational potential energy at a height \[{{R}_{e}}\] from the earth?s surface will be (Here \[{{R}_{e}}\] is the radius of the earth) [AIIMS 2000; MP PET 2000; Pb. PMT 2004]

• A.             \[-2\,mg{{R}_{e}}\]
• B.               \[2\,mg{{R}_{e}}\]
• C.             \[\frac{1}{2}mg{{R}_{e}}\]
• D.               \[-\frac{1}{2}mg{{R}_{e}}\]