The acceleration of a body due to the attraction of the earth (radius R) at a distance 2 R from the surface of the earth is (g = acceleration due to gravity at the surface of the earth) [MP PET 2003]

• A. \[\frac{g}{9}\]
• B. \[\frac{g}{3}\]
• C. \[4\pi {{\mu }_{0}}ni\] 
• D. g