25. Two artificial satellites, 1 and 2 , are put into circular orbit at the same altitude above Earth's surface. The mass of satellite 2 is twice the mass of satellite 1 . If the period of satellite 1 is T, what is the period of satellite 2 ?
(A) T/2
(B) T
(C) 2T
(D) 4T
(A) T/2
(B) T
(C) 2T
(D) 4T