(12) and (45) both can be with blue balls at same time , where is that case?

Choose the correct option:

Boxes numbered $1, 2, 3, 4$ and $5$ are kept in a row, and they are to be filled with either a red or a blue ball, such that no two adjacent boxes can be filled with blue balls. How many different arrangements are possible, given that all balls of a given colour are exactly identical in all respects?

- $8$
- $10$
- $15$
- $22$