Im fluent in spanish but even i struggled a bit w this. but i think its
1C
2B
3D
4E
5A
In fact the letters were not letters. They were roman numerals.Looks like the numbers are coordinates, Carolina. You are right. Maybe it's the coordinates to find the treasure. The girls decided to find the coordinates. They came to a long hallway and opened the door to the hallway. As they opened it, the Pirates had already arrived.
Espero haber ayudado!
Answer is(a) ellos escuchan nuestra musica.
La costa de México tiene muchas "playas"