A satellite moves around the earth in a circular orbit of radius r centered at the earth. a second satellite moves in an elliptic orbit of major axis 8r, with t

A satellite moves around the earth in a circular orbit of radius R centered at the earth. A second satellite moves in an elliptic orbit of major axis 8R, with the earth at one of the foci. If the former takes I day to complete a revolution, the latter would take (a) 21.6 days JAM 2015] (b) 8 days (c) 3 hours (d) 1.1 hour