B magnetic ring is subjected to downward force: vertical downward force of gravity G, A on the B force F1; upward force is only C on the B force F2.
And because the B magnetic ring is at rest belongs to the state of equilibrium, it is subjected to the combined force of zero, that is, F2 = G + F1. so F1 is less than F2.
Therefore, the choice of A!
So choose A.