The adjacent figure is the part of a horizontally stretched net section $A B$ is stretched with a force of $10 \mathrm{~N}$. The tension in the seetion $B C$ and $B F$ are
(a) $10 \mathrm{~N}, 11 \mathrm{~N}$
(b) $10 \mathrm{~N}, 6 \mathrm{~N}$
(c) $10 \mathrm{~N}, 10 \mathrm{~N}$
(d) Can't calculate due to insufficient data