Answer:
it's probably Japanese or maybe Chinese
Explanation:
It looks like Kanji
Depends on the form of you.
Informal form of you: Lo que es mío es tu y lo que es tuyo es mío.
Formal form of you: Lo que esmío es su y lo que es suyo es mío.
1) A
2) D - Not sure 100%
3) - Don't know the song
4) D - Both a and b