Which three lengths could be the sides of a triangle?

9in, 3in, 18 in
6 in, 8 in, 13in
10 in, 8 in, 2in
8 in, 3 in, 2 in

The three lengths that could be the sides of a triangle are:

1. 6 in, 8 in, 13 in
2. 10 in, 8 in, 2 in
3. 8 in, 3 in, 2 in