For String text = "A🚗", which statement is correct?

For String text = "A🚗", which statement is correct?

1. text.length() is 3 and its code-point count is 2.
2. text.length() is 2 because Java indexes Unicode code points.
3. text.charAt(1) returns the complete car emoji.
4. text.substring(0, 2) is guaranteed to preserve complete code points.