How do you say, "How old is she?" in French?

Question

For French 1.

Answer 1

Elle a quelle âge ?

Quelle âge elle a ?

Quelle âge a-t-elle ?

Answer 2

Quel age a-t-elle?

Answer 3

Quel âge a-t-elle? (The accent over the a is important...also, the difference between my answer and that below is the one below me is asking "She is how old?")

Answer 4

elle a quelle age? with a little ^ over the a in age