There are no traffic signs placed in the following intersection, According to the rules of giving right-of-way, in what order should vehicles that arrived at the same time enter the intersection?

1. A You enter first (3), then the red vehicle (2), and the green vehicle will enter last (1).
2. B First enters the green vehicle (1), the red vehicle next (2) and you go last (3).
3. C The green vehicle (1) first, then you (3), and the red vehicle will enter last (2).
4. D The order is simple - first to arrive is last to drive.