A solid sphere (A) of mass $$5m$$ and a spherical shell (B) of mass $$m$$, both having same radius, are placed on a rough surface. When a force of same magnitude is applied tangentially at the highest points of A and B, they start rolling without slipping with an acceleration of $$a_A$$ and $$a_B$$, respectively. The ratio of $$a_A$$ and $$a_B$$ is __________.

A

5 : 21

B

6 : 10

C

21 : 25

D

1 : 5