Possible Answer
B.
<em>Not 100% on this on but pretty sur it is B.</em>
Hope this helps :)
Answer:
I think it is C
Explanation:
Sorry if I'm wrong-
They Decide if they are going to open the case
TRUUUUUUUUUUUUUUUE
2 x 10 = 20
You add 10 twice.
10 + 10 = 20
Hope this helps!