Which of the following are possible side lengths for a triangle

Answer:
B
Step-by-step explanation:
The two smallest sides of a triangle must be greater than the third, larger one.
A: 6 + 2 > 9
8 > 9
False
B: 5 + 7 > 8
12 > 8
True
C: 2 + 4 > 6
6 > 6
False