help me pleaseeeee!!!!!!!!!!!!!!!

Answer:
I think it is c
Step-by-step explanation:
Cause a b and c both meet at the 5b Sorry if this is wrong but i tryed please don't repot me if this is wrong i tried my best
Answer:
I think that the answer is C.) 1/10
Step-by-step explanation:
I hope this helps and sorry if I'm wrong!! :))