Answer:
B
Step-by-step explanation:
The two smaller sides must be, in sum, bigger than the biggest side of a triangle.
Picture the biggest side alone and then, right on top of it, the next smaller side attached two a corner.
Do the same with the smallest.
If they can't touch or overlap on the biggest line/side, the will also not be able to form a closed triangle.
If unsure, always just draw a problem.