A geostationary satellite is orbiting the earth at a height of 5R above that surface of the earth, R being the radius of the earth. The time period of another satellite of the earth. The time period of another satellite in hours at a height of 2R from the surface of the earth is

Question

( A ) 5
( B ) $\frac{6}{\sqrt{2}}$
( C ) $6\sqrt{2}$
( D ) 10